A method for promoting drying and dehydration of potato dregs and its application

A potato dregs and fermentation method technology, applied in the application, bacteria used in food preparation, food processing and other directions, can solve the problems of potato dregs transformation and utilization and efficiency improvement, enterprise trouble and loss, easy accumulation and corruption, etc. problems, to achieve the effect of enhancing the ability to inhibit corruption, improving application value, and reducing the difficulty of processing

Active Publication Date: 2020-02-11
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the transformation, utilization and efficiency enhancement of potato residues cannot be solved, they will easily accumulate and become corrupted, causing environmental problems and bringing troubles and losses to enterprises.

Method used

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  • A method for promoting drying and dehydration of potato dregs and its application
  • A method for promoting drying and dehydration of potato dregs and its application
  • A method for promoting drying and dehydration of potato dregs and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 1U / g of pectinase to fresh potato residue, and inoculate the concentration of 5.6×10 9 CFU / mL Lactobacillus plantarum CCTCC M 2017138 bacterial liquid, the inoculation amount is 10% (bacterial liquid volume mL / fermentation substrate mass g), after mixing evenly, solid-state anaerobic fermentation at 37°C for 72h. Centrifuge and dehydrate after fermentation, measure the total number of colonies in the fermentation system, and take out a certain amount of potato dregs to observe the mildew at room temperature. Fresh potato pomace was used as a control and cultured under the same conditions (solid-state anaerobic fermentation at 37°C for 72h).

[0034] As shown in Table 1 of the measurement results, the addition of pectinase and Lactobacillus plantarum fermentation treatment can significantly reduce the total number of colonies in the fresh potato residue system, and the total number of colonies is from 2.20×10 8 Reduced to 3.46×10 7 (at least an order of magnitude)....

Embodiment 2

[0039] Add the following substances to the fresh potato residues respectively:

[0040] (1) Pectinase and cellulase mixed enzyme solution with a mixing ratio of 1:4 (enzyme activity ratio); (2) pectinase and cellulase at a mixing ratio of 1:2:3 (enzyme activity ratio) Mix the enzyme solution with hemicellulase, the amount of pectinase added is 0.25U / g; (3) the mixing ratio of pectinase and cellulase is 1:1 (enzyme activity ratio), the amount of pectinase added is 3.75 U / g; (4) The amount of pectinase added is 0.25U / g.

[0041] (2) After mixing the above-mentioned enzyme liquid and fresh potato dregs evenly, the concentration of inoculated bacteria liquid was 4.40×10 9 CFU / mL of Lactobacillus plantarum CCFM 8661 bacterial liquid, the inoculum amount is 4% (bacterial liquid volume mL / fermentation substrate mass g), after mixing evenly, spread it flat, seal the bag or seal it with a film. Solid state anaerobic fermentation at 37°C for 72 hours. After the fermentation, it was d...

Embodiment 3

[0044] Add pectinase and cellulase with a mixing ratio of 1:4 to the fresh potato residue, and the pectinase addition amount is 0.25U / g, mix evenly, inoculate the mixed bacterial liquid of Lactobacillus plantarum and highly active yeast, and inoculate The amount is 6%, and the bacterial concentration of Lactobacillus plantarum (CCFM 8661) is 3.2×10 9 CFU / mL, the rehydration ratio of highly active yeast is 40:1 (water quality: yeast powder quality), and the viable count of high active yeast is 7.9×10 7 CFU / mL, the mixing ratio of the two strains is 1:2 (volume ratio), after mixing evenly, spread it flat, seal the bag or seal it with a film. Solid state anaerobic fermentation at 37°C for 48h. After the fermentation, the samples were centrifuged and dehydrated, and then air-dried at 55°C. Record the drying time of the sample, the moisture content at the drying end point, and the yield after drying. The result is as figure 2 shown.

[0045] The fresh potato dregs (wet dregs,...

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Abstract

The invention discloses a method for promoting drying and dehydration of potato dregs and an application thereof, belonging to the field of utilization of biomass resources. The present invention uses fresh potato residue as the fermentation substrate, adds at least one of pectinase, cellulase, and hemicellulase for enzymolysis treatment, and inoculates the mixed bacterial liquid of Lactobacillus plantarum and yeast for solid-state anaerobic fermentation , can effectively prevent the potato residue from spoilage, improve the nutritional value of the potato residue, and make the potato residue quickly dehydrated, easy to dry, and has good economic and environmental benefits.

Description

technical field [0001] The invention relates to a method for promoting drying and dehydration of potato dregs and an application thereof, belonging to the field of utilization of biomass resources. Background technique [0002] China's potato planting area and total output rank first in the world, and a large amount of potatoes are used for starch and whole powder processing every year. In the process of producing potato starch, a large amount of waste potato residues are produced, and an average of 6-7 tons of potato residues are produced for every ton of potato starch produced. With the rapid development of potato starch industry, the problem of poor comprehensive utilization of potato residue has become a bottleneck problem restricting the development of potato starch processing industry. [0003] Potato residue is mainly composed of water, cell debris and residual starch granules. The water content of fresh potato residues can reach 90%, and there are also substances w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23K10/12A23K10/14A23K10/37
CPCA23K10/12A23K10/14A23K10/37A23V2400/169Y02P60/87
Inventor 程力顾正彪杜静洪雁李兆丰李才明
Owner JIANGNAN UNIV
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