A sample bag for rapid drying and storage of plants
By designing sample bags with good air permeability, the problems of low drying efficiency and mixing of plant organs were solved, enabling rapid, independent packaging and efficient drying, thus improving the accuracy of scientific research data and resource utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INST OF COTTON RES CHINESE ACAD OF AGRI SCI
- Filing Date
- 2024-04-01
- Publication Date
- 2026-07-14
Smart Images
Figure CN118047129B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of biological sampling technology, specifically relating to a sample bag for rapid drying and storage of plants. Background Technology
[0002] Currently, scientific experiments have become an important means of promoting social progress. Agricultural scientific experiments, especially those in the field of botany, often involve in-depth sampling and analysis of the entire plant in plant factories, fields, and other growing areas. This data is used for scientific experiments such as specimen preparation of plants or organs, plant composition analysis, and specific nutrient / physiological analysis. For example, sampling and surveying individual plants and organs of growing crops, trees, flowers, or medicinal herbs over a specific period of time is used to analyze growth rates and dry matter distribution patterns. Therefore, the process often involves the decomposition, dissection, drying, and preservation of plant populations or individual plants and their organs. Among these processes, rapid drying of the plant body and its organs is undoubtedly a crucial step. Current technologies employ methods... The main drying methods include sun exposure, air drying, shade drying, ventilated hanging storage, chemical dehydration, and heat drying. Among these, heat drying is commonly used by researchers or producers. Because fresh plants are rich in water and contain organic matter in their sap, if they are not dried in time or if the drying efficiency is low, they are prone to mold and rot, affecting experimental results or specimen preparation. Moreover, decomposed organs such as roots, stems, branches, leaves, flowers, and fruits must be placed separately according to scientific research needs, classified and weighed independently, or subjected to further processing (such as roasting, drying, fermentation, crushing, or formulating feed or formulas). To avoid mutual interference between organs during the drying process, independent packaging and storage are essential and necessary for scientific drying and management.
[0003] Traditional drying methods involve placing different organs separately on trays, ordinary drying trays, or ordinary paper bags or envelopes for drying, which is relatively simple and crude. While open trays allow for rapid moisture loss during drying, organs tend to mix during the drying process, making weighing or repackaging after drying cumbersome. Ordinary paper bags or envelopes lose moisture slowly during drying, and the paper itself varies greatly in quality and has poor permeability, resulting in low drying efficiency. For example, Chinese patent CN206679526U discloses a plant breathable sample bag, which includes a sample bag body, an item placement space, and ventilation holes between them. Its main functions are twofold: first, to fix the plant inside the sample bag; and second, to replace the air in the fresh plant sample, preventing organ or tissue decay. However, this technology cannot yet be used to place organs in a drying oven for efficient drying, rapid dehydration, and moisture loss. Chinese patent CN204998958U discloses a seed packaging bag, which features a vacuum sample bag, opaque packaging, and a sealing chain and technology. This ensures that the seeds can be monitored and that the seeds are stored in a dry condition, making it suitable for placing items in the humid environment of the south. However, it cannot meet the needs of the process of fresh plant samples from sampling to isolation, and from isolation to heating in the drying oven.
[0004] Therefore, how to provide a sample bag that can independently package plant organs and has rapid dehydration is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention
[0005] To address the aforementioned technical problems, this invention provides a sample bag for rapid drying and storage of plants. By adopting the sample bag structure of this invention, it is beneficial to the rapid drying of fresh organs, which not only improves the decomposition efficiency of plant organs but also reduces drying time, greatly improves the accuracy of data acquisition, and saves on the resource occupancy of laboratories and drying ovens. It has great application prospects in agricultural research, preservation of traditional Chinese medicine materials, and preparation of plant organ specimens.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A sample bag for rapid drying and storage of plants, the sample bag comprising a sealing edge and a sample bag body, the sample bag body being divided into an inlet layer, a middle permeable layer and a storage layer from top to bottom;
[0008] The inlet layer, the intermediate permeable layer, and the storage layer are all provided with exhaust holes. The exhaust holes of the inlet layer account for 6-8% of the area of the inlet layer, and the exhaust holes of the intermediate permeable layer and the storage layer account for 30-40% of the area of the intermediate permeable layer and the storage layer, respectively.
[0009] The vent holes of the intermediate permeable layer and the storage layer are arranged in a 3×3 grid pattern for every 9 vent holes;
[0010] The inner edge of the vent hole is serrated.
[0011] This invention uses loose vent holes in the inlet layer for ventilation and steam conduction, and dense vent hole groups in the middle permeable layer and the storage layer for steam conduction and drainage. During the drying process, it is easy to remove moisture from the sample bag, ensuring that the sample completes the drying process as soon as possible, reducing post-processing errors, and shortening the drying time, which greatly saves electricity and energy resources.
[0012] Preferably, the height ratio of the inlet layer, the intermediate permeable layer and the storage layer is 5-8:10-16:8-10, and more preferably 6:15:9.
[0013] The sample bag of this invention is designed with different functional areas and their arrangement and proportions. The entrance layer mainly maintains the integrity and appearance of the sample bag, accounting for about 6.7% of the height. The middle permeable layer mainly increases the porosity of the sample to promote the movement of drying moisture (water vapor) from the bottom to the middle and its rapid discharge out of the sample bag during reheating, accounting for about 50% of the height. The storage layer serves to both store fresh plant samples or organs and promote the dissipation of water vapor during heating.
[0014] Preferably, the diameter of the exhaust hole is 1-3 mm, more preferably 2 mm, and the inner edge of the exhaust hole is serrated.
[0015] The size of the vent hole in this invention serves two purposes: firstly, it maintains the structure of the sample bag, and secondly, it facilitates the expulsion of moisture from the plant organs during heating.
[0016] Preferably, the number of serrations is 8-12, more preferably 10, and the height of the serration protrusions is 0.4-0.6 mm, more preferably 0.55 mm.
[0017] This invention effectively increases the circumference of each vent by serrifying the circumference of the vent holes, which is beneficial for water vapor dissipation.
[0018] Preferably, the exhaust holes of the inlet layer are arranged in a V-shape.
[0019] This invention employs a V-shaped arrangement and appropriately reduces the number of vent holes at the inlet. On the one hand, this helps the intermediate layer continue to release moisture out of the sample bag, and on the other hand, it maintains the integrity and structure of the sample bag.
[0020] Preferably, the sample bag body is a cuboid, and the length-width-height ratio of the cuboid is 17-20:3-5:28-32.
[0021] Preferably, the ratio of the height to the length of the cuboid is 1.5-1.8, and more preferably 1.6.
[0022] The present invention uses the above proportions to maintain a reasonable appearance and aesthetic view of the sample bag; of course, the technical indicators are not limited indicators, and implementers can reasonably adopt different length-width-height ratios according to the size of fresh plants or organs.
[0023] Preferably, the interval between each exhaust hole in the grid pattern is 1-5 mm;
[0024] The horizontal and vertical spacing of the tic-tac-toe pattern in the intermediate permeable layer is 10-30mm.
[0025] The spacing of the grid pattern in the horizontal and vertical directions of the storage layer is 10-30mm, and the distance between the vent and the bottom of the storage layer is at least 15mm.
[0026] Because the pores in this invention have a diameter of 1-3mm, the spacing between pores within the pore group (1-5mm) and the spacing outside the venting pore group (10-30mm) are set according to this diameter. This helps to obtain a suitable number of pores and helps to keep the total area of the venting pores occupying 30-40% of the surface area of the entire sample bag, thereby promoting the rapid removal of moisture during drying. By setting a 3×3 grid-shaped arrangement of pore groups, it is convenient to arrange the perforation needles on the sample bag material (kraft paper) in one operation during the molding process of the middle permeable layer.
[0027] Preferably, the sealing edge is provided with an anti-slip strip, and the sample bag body is folded inward to seal it. The sealing edge has an inward folding function, and the entire sample bag is sealed by inward folding to prevent the plant decomposition organs inside from sliding out of the drying bag.
[0028] Preferably, the sample bag is made of kraft paper with a paper density of 110-130 g / m³. 2 The kraft paper is single-sided glossy kraft paper, wherein the single-sided gloss is the inner wall.
[0029] Compared with the prior art, the present invention has the following beneficial effects:
[0030] (1) The sample bag of the present invention can quickly achieve the dehydration and drying of fresh plant organs, which is beneficial to improving drying efficiency and saving 30% of drying time.
[0031] (2) The sample bag of the present invention improves the efficiency of classification and packaging of plant organs. The same organ dissected is placed in the same independent sample bag, realizing one processing and one drying bag, one loading, independent drying and independent weighing, which prevents the fresh plant organs from being mixed, lost or damaged during drying. At the same time, the weighing of organ dry matter is further accelerated. Since each sample bag has a uniform quality and uses relatively stable sulfuric acid paper, it can be weighed directly in the dried sample bag, and then the gross weight (sample) is deducted, which greatly improves the accuracy of scientific research and the subsequent management of samples, and improves the data accuracy and efficiency of organ analysis in scientific research.
[0032] (3) In the preservation of organs after drying, the sample bags of the present invention are independent and can be effectively ventilated, which is conducive to air drying and preservation in the storage environment, thus achieving scientific storage. Attached Figure Description
[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0034] Figure 1 This is a perspective view of the sample bag of the present invention;
[0035] Figure 2 This is a rectangular surface structure diagram of the sample bag prepared in Example 1 of the present invention;
[0036] Figure 3 This is a structural diagram of the vent hole of the sample bag;
[0037] Figure 4 This is a graph showing the change in moisture content during the drying process in Example 1 of the application of the present invention;
[0038] Figure 5 The bar chart shows the rate of water loss during drying of different cotton plant organs in Example 2 of the application of this invention. Detailed Implementation
[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0040] Example 1
[0041] This invention provides, for example Figure 1A method for preparing a sample bag for rapid drying and storage of plants includes the following specific steps:
[0042] (1) Purchase glossy kraft paper (density 125g / m³). 2 A rectangular kraft paper surface with dimensions of 470mm x 360mm was determined.
[0043] The first step is to create the fold lines for the sample bags. The main steps are as follows:
[0044] 1-1) As Figure 2 Four fold lines are obtained by folding along the long side (horizontal direction) at 180mm (L1), 230mm (L2), 410mm (L3), and 460mm (L4), thus obtaining the fold marks on the four sides of the sample bag (rectangular body). The leftmost side along the long side of the rectangular face is marked as 0mm and is marked as L0. The rightmost side is marked as 470mm and is marked as L5.
[0045] 1-2) such as Figure 2 Along the width (vertical direction) of the rectangular surface, starting from the top edge at 0mm (L0), fold at 300mm and 350mm to obtain two fold lines, thus creating the fold marks on the two bottom edges of the sample bag (rectangular body) (D1 at 300mm and D2 at 350mm); the fold mark at 360mm (bottom edge) of the top edge is denoted as D3.
[0046] (2) Make the vent assembly:
[0047] 2-1) Creating loose vent holes in the entrance layer: Within the 0-60mm range of the wide side (vertical direction) of the rectangular surface, use a punch (punch needle) to drill a vent hole from the leftmost corner of this section. The diameter of a single loose vent hole is 2mm, and the inner edge of the vent hole is serrated, with 10 serrations on each circumference edge and a serration protrusion height of 0.5mm. Then, arrange them in a V-shape along the vertical downward slope to the right at an angle of 14.04° (α=0.245), with a vertical height interval of 2mm. Drill the 2nd, 3rd, ..., up to the 16th vent hole (vertical height 15×4=60mm). Then, fold back upwards (along the vertical upward slope to the right at an angle of 14.04°) until the V-shape arrangement is complete. Then, at a 1mm interval, complete the 2nd V-shaped loose vent hole group; and so on, completing 14 V-shaped loose vent hole groups in the entire upper entrance section.
[0048] 2-2) Fabricating dense vent holes in the intermediate permeable layer: In the 80-190mm range along the wide side (vertical direction) of the rectangular surface, use a punch (punch needle) to first punch a grid-shaped vent hole group starting from the leftmost corner of this part. The grid-shaped vent hole group consists of 3 rows × 3 columns = 9 vent holes, with a diameter of 2mm for each vent hole. The inner edge of the vent hole is serrated, with 10 serrations on each circumference. The serration protrusion height is 0.5mm. The vent holes in the grid-shaped vent hole group are spaced 2mm apart, i.e., the side length of the grid is 10mm. Then, continue to fabricate grid-shaped vent hole groups along the same horizontal direction, with an interval of 12mm between adjacent grids. Continue in this manner to fabricate 20 grid-shaped vent hole groups in the same horizontal direction. Further, fabricate 20 grid-shaped vent hole groups for the next layer, with an interval of 10mm between the two layers. A total of 6 layers are fabricated in the intermediate permeable layer.
[0049] 2-3) Creating a dense venting system for the storage layer: Using a punch (hole punch needle), create a grid-shaped venting system within the 210-290mm range along the wide side (vertical direction) of the rectangular surface, starting from the leftmost corner. Each grid-shaped venting system consists of 3 rows × 3 columns = 9 vents, each with a diameter of 2mm and a serrated edge. Each circumference has 10 serrations, with a serration protrusion height of 0.5mm. The vents within the venting system are spaced 2mm apart, meaning the grid's side length is 10mm. Continue creating grid-shaped venting systems along the same horizontal direction, with adjacent grids spaced 12mm apart. Repeat this process to create 20 grid-shaped venting systems in the same horizontal direction. Further, create 20 grid-shaped venting systems for the next layer, with a 10mm interval between layers. A total of 4 layers are created for the storage layer.
[0050] (3) Adhesion of the main sample bag: Adhere the sample bag horizontally so that lines L4 and L0 coincide. Apply enough adhesive to the overlapping part of L4 and L5. Then, align lines D3 and L0 vertically and apply enough adhesive to the overlapping part of D4 and D3. Remove the excess parts at the lower left and right corners of the main sample bag during the adhesion process.
[0051] (4) Making the sealing edge: First, cut out a rectangular kraft paper with a length × width of 180mm × 60mm from the kraft paper. Make an anti-slip strip along one long side to form a row of serrated edges with a serration depth of 5mm. Attach the unserrated edge to one side of the upper entrance of the main sample bag (the overlap is 10mm). This will give you a sealing edge with an inward folding anti-slip function, forming a complete sample bag for the rapid drying and storage of organs of crops or medicinal plants.
[0052] Application Example 1
[0053] The sample bag prepared in Example 1 (made of kraft paper and multiple vent holes with micro-pores, of which there are a total of 300 vent holes, the diameter of a single vent hole is Φ=2mm, the vent hole area accounts for 33.5% of the front and back surface area of the sample bag, and the treatment number is A1) was used as drying sample bags. A kraft paper bag of the same material without vent holes (treatment number CK1), a kraft paper bag of the same material with large pores (treatment number CK2, Φ=10mm) and a traditional envelope were used as drying sample bags (treatment number CK3). The drying index test of the four drying sample bags was carried out.
[0054] The sampling material consisted of cotton plants with shrub-like characteristics (height 100-120cm, fresh weight 130-200g per plant). On August 3, 2022 (when the cotton was in the flowering and boll-forming stage), the above-ground parts of 10 cotton plants were separated into three parts: bolls, leaves, and stems. Each part was placed in a different drying bag (labeled with the corresponding treatment number, A1, CK1, CK2, CK3), repeated three times. The bags were then promptly placed in a forced-air drying oven (model DHG9220B, operating from 8:00-12:00 and 14:00-18:00 daily) for dehydration and drying. The plants were removed from the drying oven at 3h, 4.5h, 6h, 7.5h, 24h, 32h, 56h, and 80h, weighed, and then promptly returned to the oven. The resulting curves showing the change in moisture content (%) of the cotton parts in each sample bag during the drying experiment were obtained. Figure 4 As can be seen, the percentage of cotton leaves in the sample bags in this case decreased from 80.3% to 13.6% within 10 hours, a decrease of 66.7 percentage points. This is 17.4 percentage points higher than the non-porous sample bag (CK1) of the same material, 4.1 percentage points higher than the sparsely pored sample bag (CK2) of the same material, and 22.4 percentage points higher than the conventional open-sealed sample bag (CK3). Similarly, the percentage of cotton bolls in the sample bags in this case decreased from 78.9% to 17.0% within 56 hours, a decrease of 61.9 percentage points, which is higher than that of CK1 and CK2 respectively. 2. CK3 showed a decrease of 15.2, 11.6, and 13.2 percentage points respectively; the cotton plant stems and branches in the sample bags of this invention decreased from 79.4% to 20.9% within 56 hours, a decrease of 58.5 percentage points, which is 9.1, 1.4, and 11.3 percentage points greater than CK1, CK2, and CK3 respectively. This indicates that the sample bags of this invention showed the highest reduction in moisture content during the drying process, demonstrating a significant difference in the drying and water loss effect of the sample bags designed in this invention compared to other methods for various parts of the cotton plant. Simultaneously, the water loss rates (g·g dry matter) at 3h and 6h were calculated. -1 ·h -1 The drying performance of each sample bag was evaluated based on changes in moisture content and organ water loss rate. A bar chart of the relevant drying performance data was obtained. (See attached image.) Figure 5 The water loss rate of cotton leaves increased by 24.2, 10.8, and 28.0 percentage points compared to CK1, CK2, and CK3, respectively, while the water loss rate of cotton stems and branches increased by 31.1, 4.4, and 33.1 percentage points compared to CK1, CK2, and CK3, respectively. The water loss rate of cotton reproductive organs (cotton bolls) increased by 47.6, 0.7, and 50.2 percentage points compared to CK1, CK2, and CK3, respectively, which significantly improved the drying efficiency.
[0055] Application Example 2:
[0056] Several sample bags were prepared in Example 1. Further comparative experiments were conducted on the efficiency of data recording process and the mixing rate of sample weighing. Cotton plants at the flowering and boll-forming stage (August 3) were sampled and divided into different organs (roots, stems, leaves, and bolls). The samples were placed into each sample bag. The samples containing the organs were then placed in a drying oven to dry. After drying, each sample bag was taken out, the mass of each organ was weighed and recorded, and the data was entered into the relevant record book (see the first data recording method in Table 1).
[0057] Compared with the traditional data recording and drying mode, the different organs of a cotton plant (roots, stems, leaves, and bolls) were dissected and collected separately and placed into ordinary trays one by one. Each part was placed in an independent area to prevent mixing. Then, the ordinary trays were placed in a drying oven to dry. After drying, the trays were removed, the dry matter mass of the four organs was weighed and recorded, and the data was entered into the relevant record book (see the second data recording method in Table 1).
[0058] As shown in Table 1, the data comparison shows that Process A records 305 samples per hour, which is 122.6% more efficient than the sample recording method after tray drying. Moreover, due to the use of independent sample bags for weighing, the sample contamination rate is only 0.49%, and the contamination rate during the sample weighing process is reduced by 3.52 percentage points.
[0059] Table 1 Comparison of work efficiency and sample weighing contamination rate under different drying modes for plant samples.
[0060]
[0061] This embodiment features a specific number and size of ventilation holes on the sample bag, which plays a scientific role in assessing the water loss rate during the drying process. It also recommends that different plant organs be packaged and dried separately. Application Examples 1 and 2 show that leaves lose water significantly faster than stems, branches, and reproductive organs (cotton bolls). This approach is beneficial for the scientific accuracy of drying and sample preparation of research plant materials. Furthermore, this experiment avoids mixing of organs, facilitating rapid and accurate weighing of dried samples and preventing deviations in subsequent plant processing and data recording.
[0062] The various embodiments are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between the various embodiments can be referred to each other.
[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A sample bag for rapid drying and storage of plants, characterized in that, The sample bag includes a sealing edge and a sample bag body, and the sample bag body is divided into an inlet layer, a middle breathable layer and a storage layer from top to bottom; The inlet layer, the intermediate permeable layer, and the storage layer are all provided with exhaust holes. The exhaust holes of the inlet layer occupy 6-8% of the area of the inlet layer, and the exhaust holes of the intermediate permeable layer and the storage layer occupy 30-40% of the area of the intermediate permeable layer and the storage layer, respectively. The vent holes of the intermediate permeable layer and the storage layer are arranged in a 3×3 grid pattern for every 9 vent holes; The exhaust holes in the inlet layer are arranged in a V-shape; The inner edge of the exhaust port is serrated; the number of serrations is 8-12, and the height of the serration protrusions is 0.4-0.6mm; The height ratio of the inlet layer, the intermediate permeable layer, and the storage layer is 5-8:10-16:8-10; The diameter of the exhaust port is 1-3mm.
2. The sample bag for rapid drying and storage of plants according to claim 1, characterized in that, The sample bag body is a cuboid with a length-width-height ratio of 17-20:3-5:28-32.
3. A sample bag for rapid drying and storage of plants according to claim 2, characterized in that, The ratio of the height to the length of the cuboid is 1.5-1.
8.
4. A sample bag for rapid drying and storage of plants according to claim 1, characterized in that, The interval between each exhaust hole in the grid pattern is 1-5mm; The horizontal and vertical spacing of the tic-tac-toe pattern in the intermediate permeable layer is 10-30mm. The spacing of the grid pattern in the horizontal and vertical directions of the storage layer is 10-30mm, and the distance between the vent and the bottom of the storage layer is at least 15mm.
5. A sample bag for rapid drying and storage of plants according to claim 1, characterized in that, The sealing edge is provided with an anti-slip strip, and the sample bag body is sealed by folding inward.
6. A sample bag for rapid drying and storage of plants according to claim 1, characterized in that, The sample bags are made of kraft paper with a density of 110-130 g / m³. 2 The kraft paper is single-sided glossy kraft paper, with the glossy side being the inner wall.