Compositions for forming protective coatings on, e.g., agricultural products, can form a lamellar structure on the surface of the agricultural product that forms a barrier to, e.g., water and gas.

Described herein are methods of preparing cutin-derived monomers, oligomers, or combinations thereof from cutin-containing plant matter. The methods can include heating the cutin-derived plant matter in a solvent at elevated temperature and pressure. In some preferred embodiments, the methods can be carried out without the use of additional acidic or basic species.

Described herein are methods of preparing cutin-derived monomers, oligomers, or combinations thereof from cutin-containing plant matter. The methods can include heating the cutin-derived plant matter in a solvent at elevated temperature and pressure. In some preferred embodiments, the methods can be carried out without the use of additional acidic or basic species.

A food preserving method is a method for preserving food using a food film (34A), (34B). The food film (34A), (34B) has a surface which has a plurality of raised portions (34Ap), (34Bp). The two-dimensional size of the plurality of raised portions (34Ap), (34Bp) is in a range of more than 20 nm and less than 500 nm when viewed in a direction normal to the food film (34A), (34B). The method includes bringing the food into direct contact with the surface.

A food preserving method is a method for preserving food using a food film (34A), (34B). The food film (34A), (34B) has a surface which has a plurality of raised portions (34Ap), (34Bp). The two-dimensional size of the plurality of raised portions (34Ap), (34Bp) is in a range of more than 20 nm and less than 500 nm when viewed in a direction normal to the food film (34A), (34B). The method includes bringing the food into direct contact with the surface.

The present disclosure relates to a green color-protecting bacteriostatic crisp-preserving fresh-cut sweetheart apple and biological preservation technology. Two fermentation liquids of Xanthomonas campestris and Lactobacillus plantarum are separately fermented, and are removal of the bacterial species, and then mixed in the ratio of 1:1 to obtain a bacterial solution, the bacterial solution is diluted 20-30 times for use, and then calcium chloride with a final concentration of 1-5 wt % is added to the bacterial solution. The extracellular polysaccharide produced by the metabolism of xanthomonas in the fresh keeping agent in the present disclosure is a safe food additive, which has good film-forming, thickening, stabilizing and water-holding effects, and strong biological activity. Acidic substances produced by the metabolism of Lactobacillus plantarum have bacteriostatic effects. Besides, calcium is a common substance used to keep the fruits and vegetables crisp after harvest.

The present disclosure relates to a green color-protecting bacteriostatic crisp-preserving fresh-cut sweetheart apple and biological preservation technology. Two fermentation liquids of Xanthomonas campestris and Lactobacillus plantarum are separately fermented, and are removal of the bacterial species, and then mixed in the ratio of 1:1 to obtain a bacterial solution, the bacterial solution is diluted 20-30 times for use, and then calcium chloride with a final concentration of 1-5 wt % is added to the bacterial solution. The extracellular polysaccharide produced by the metabolism of xanthomonas in the fresh keeping agent in the present disclosure is a safe food additive, which has good film-forming, thickening, stabilizing and water-holding effects, and strong biological activity. Acidic substances produced by the metabolism of Lactobacillus plantarum have bacteriostatic effects. Besides, calcium is a common substance used to keep the fruits and vegetables crisp after harvest.

Disclosed herein are compositions comprising insoluble alpha-glucan particles having a high degree of crystallinity and small particle size. For example, the alpha-glucan particles can have a degree of crystallinity of at least about 0.65, and/or an average size of less than a micron. At least 50% of the glycosidic linkages of the insoluble alpha-glucan in the disclosed particles are alpha-1,3 glycosidic linkages. Further disclosed are methods of producing insoluble alpha-glucan particles, as well as their use in various applications and products.

Disclosed herein are compositions comprising insoluble alpha-glucan particles having a high degree of crystallinity and small particle size. For example, the alpha-glucan particles can have a degree of crystallinity of at least about 0.65, and/or an average size of less than a micron. At least 50% of the glycosidic linkages of the insoluble alpha-glucan in the disclosed particles are alpha-1,3 glycosidic linkages. Further disclosed are methods of producing insoluble alpha-glucan particles, as well as their use in various applications and products.

A sweet potato processed food can be preserved at room temperature for a long period of time while maintaining the taste, palatability, or the like acquired right after preparation procedures, given that the processed food is prepared by a process including: (1) washing and drying a sweet potato; (2) packaging each sweet potato of the step (1) in a laminated foil packaging sheet; and (3) pasteurizing the packaged sweet potato of the step (2) at 121 to 150 C. for 25 to 35 minutes. It is therefore expected to increase the income of sweet potato farmers and ensure high industrial availability by using the method for processing sweet potatoes into baked or steamed sweet potatoes that are readily consumable without trouble to conduct a separate cooking procedure, distributable at room temperature, and preservable for a long period of time.