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Ball-rod double nanostructure enhanced cold water fish gelatin-based edible film and preparation method and application thereof

A nanostructured, cold-water fish technology, applied in the direction of hyaluronic acid coatings, coatings, cellulose coatings, etc., can solve the problems of farmers' income decline, limit cherry production, fruit waste, etc., and achieve the effect of improving characteristics

Active Publication Date: 2021-12-24
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rain-split problem of sweet cherries has severely limited cherry production, leading to significant fruit wastage and reduced income for farmers

Method used

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  • Ball-rod double nanostructure enhanced cold water fish gelatin-based edible film and preparation method and application thereof
  • Ball-rod double nanostructure enhanced cold water fish gelatin-based edible film and preparation method and application thereof
  • Ball-rod double nanostructure enhanced cold water fish gelatin-based edible film and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: the preparation of edible film

[0044] The cherries (Tieton & Cerasus pseudocerasus) used in the present invention come from Yunshan Town (Qingdao, China). Sugar cane comes from Sanya City (Hainan, China). Reagents required were: Cold-water fish gelatin (CFG) was purchased from Sigma Aldrich Ltd. (Canada). Chitosan hydrochloride (CHC), sorbitol and sodium chlorite were purchased from McLean Biochemical Co., Ltd. (Shanghai, China). Sodium alginate was purchased from Guangfu Chemical Reagent Co., Ltd. (Tianjin, China). Calcium chloride was purchased from Bodie Chemical Reagent Co., Ltd. (Tianjin, China). Acetic acid was purchased from Fuyu Chemical Reagent Co., Ltd. (Tianjin, China). Glycerol and sodium hydroxide were purchased from Kangde Chemical Reagent Co., Ltd. (Yantai, China).

[0045] 1. Preparation of spherical nanoparticles (CA)

[0046] Mix SA (1.00 g) and CaCl 2 (1.00 g) were dissolved in 100 mL ultrapure water and stirred at 1000 r / min fo...

Embodiment 2

[0055] Example 2: Characterization of Edible Films

[0056] 1. Particle size (Dh), Zeta potential and dispersion index (PDI)

[0057] The Dh, zeta potential and PDI of the aqueous solution of CNC and CA nanoparticles were measured at 25°C using Nano-90ZS zeta particle size analyzer, the results are shown in Table 2 below.

[0058] Table 2. Dh, Zeta potential and PDI of CHC, SA, CA (CHC-SA) and CNC nanoparticles

[0059]

[0060] (Note: *: a-d in each column represents a significant difference (p-1 . The mass ratio of CA prepared is SA:CHC=10:1. )

[0061] The Dh, zeta potential and PDI of CHC, SA, CA and CNC nanoparticles are shown in Table 2. CHC is a positively charged polysaccharide with a zeta potential of 46.1 mV, while SA is negatively charged with a zeta potential of −63.1 mV. Therefore, CA nanoparticles can be formed by electrostatic interaction. When the ratio of CHC:SA=1:10, the zeta potential of the prepared CA is almost zero (-3.20 mV), and the particle size...

Embodiment 3

[0097] Embodiment 3: field experiment

[0098] The experiment was conducted in a commercial orchard located in Yunshan Township (Qingdao, China) during 2019-2021. The orchard is located at 120°13´ east longitude, 36°77´ north latitude and 58 m above sea level. From the perspective of solving practical problems, the field experiment is divided into two stages. The survey found that local cherry planting is divided into greenhouse planting and open-air planting. The greenhouse cherries are mainly the Tieton variety, and the outdoor cherries are mainly the Red Lantern (Cerasus pseudocerasus) variety.

[0099] Therefore, in order to better test the rain crack resistance of the edible film, the first phase of the experiment was carried out in the greenhouse cherry orchard, and Meizao was selected as the experimental variety, and the experiment time was from April 29, 2021 to May 15, 2021. The second phase of the experiment was carried out in the open-air cherry orchard, and the ...

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Abstract

The invention discloses a ball-rod double nanostructure enhanced cold water fish gelatin-based edible film and a preparation method and application thereof. The method comprises the following steps: 1) dropwise adding a calcium chloride solution into a sodium alginate solution to obtain calcium alginate pregel, dropwise adding a chitosan hydrochloride solution into the pregel, performing ultrasonic treatment and centrifugation to obtain supernate, and freeze-drying to obtain spherical nanoparticles; 2) soaking and cleaning bagasse, drying, bleaching, adding acid for hydrolysis, centrifugally dialyzing to be neutral, and freeze-drying to obtain cellulose nanocrystals; (3) adding a sorbitol-glycerol plasticizer into the ball-rod double nanostructure enhanced cold water fish gelatin solution, uniformly stirring, and carrying out ultrasonic degassing; 4, treating the coating solution through a tape casting method to obtain the edible film, and meanwhile, improving the performance of the edible film through magnetic treatment. The prepared cold water fish gelatin-based edible film can be used for reducing cracking of cherries in rain, has biodegradability and is safe and non-toxic.

Description

technical field [0001] The invention relates to the technical field of edible coatings and edible films, in particular to a cold-water fish gelatin-based edible film reinforced with ball-rod double nanostructures, a preparation method and application thereof. Background technique [0002] Sweet cherry is an important economic crop, native to Southern Europe and Southwest Asia, and has now spread to more than 70 temperate countries and regions around the world. At present, China's sweet cherry planting area is nearly 153,000 hectares, which makes China the country with the largest planting area in the world. Therefore, sweet cherries have become the main source of income for farmers in many areas, such as Yunshan Town, Pingdu City. However, the rain cracking problem of sweet cherries has severely limited the production of cherries, resulting in serious fruit wastage and a decrease in farmers' income. According to data, in May 2020, in Qingdao, China, the fruit cracking rate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D189/00C09D101/04C09D105/04C09D105/08C09D7/65
CPCC09D189/00C09D7/65C09D7/70C08L2205/18C08L2205/14C08L2201/06C08L2201/14C08L1/04C08L5/04C08L5/08
Inventor 张双灵杨硕姜文利薛长晖曲忠峰陈宁陈成旺程小芳康梦晨李镇儒
Owner QINGDAO AGRI UNIV
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