6 results about "Starch degradation" patented technology

A method for preparing a roasted food product, suitable for preparing a coffee-like 5 beverage product, starting from one or more pulses, comprising one or more pretreatment steps followed by one or more roasting steps, wherein preferably the roasting temperature is in the range of 75 °C to 250 °C, more preferably in the range of 125 °C to 225 °C, even more preferably in the range of 150 °C to 200 °C, wherein the pretreatment comprises the following steps: ▪ at least one polysaccharide degradation step, preferably for starch degradation; ▪ at least one acidification step, preferably by fermentation, to obtain a pH preferably below 6 of the roasted food product, more preferably below 5.5, most preferably below 5; ▪ at least one drying step, wherein the water content of the pulses obtained by the polysaccharide degradation and acidification steps is adjusted to preferably 14 weight% or less, more preferably to 12 weight%, most preferably to 10 weight% as compared to the total weight of the pretreated pulses.

The present invention relates to a method for obtaining a plant-based food ingredient for a dairy alternative food product, where plant material is hydrolyzed at a temperature between 25°-60° C. in the presence of a raw starch degrading alpha-amylase and optionally additional enzymes to obtain hydrolyzed plant material for use as a plant-based food ingredient for a dairy alternative food product.

This invention discloses a dual-layer gradient degradation type fully biodegradable mulch film and its preparation method. The mulch film includes a functional slow-release layer and an induced degradation layer, with a total thickness of 20-50 μm. The functional slow-release layer contains functional nutrient starch, which is based on starch phosphate and compounded with oxalamide, potassium humate, and potassium sulfate. The nutrient release rate is coupled with the starch degradation rate, achieving a slow and controllable release of nitrogen, phosphorus, potassium, and organic matter. The induced degradation layer contains nano-biochar, which can actively enrich soil microorganisms and induce degradation. The preparation method uses a dual-layer co-extrusion blown film process, with the extrusion temperature zones of the two layers set independently and integrally formed. This invention solves the problems of poor controllability of nutrient burst release and degradation initiation in existing mulch films, as well as their large thickness and high cost.

A method for starch degradation includes the following steps. Acetylated adipic acid distarch, acid and polar solvent are mixed to form a starch suspension. The temperature of the starch suspension is adjusted to -23℃ to 47℃, and a degradation reaction is performed to form a first degraded starch solution. A base is added to raise the pH value of the first degraded starch solution to obtain a second degraded starch solution. The method for starch degradation has the advantage of simple process. A method for making an oil-proof composite layer includes the following steps. Acetylated adipic acid distarch with a weight average molecular weight of 3.00×10 6 to 5.50×10 7 and a polar solvent are mixed to obtain a starch solution. The starch solution is gelatinized to form a gelatinized starch solution. The gelatinized starch solution is attached to a substrate and a drying process is performed to form an oil-proof composite layer. The oil-proof composite layer has good oil-proof degree and can be applied to various packaging containers that require oil-proof isolation, especially food packaging containers, which has great industrial applicability.

The invention provides a kelp green rot pathogenic bacterium, the kelp green rot pathogenic bacterium is pseudoalteromonas HKCH18 (pseudoalteromonas sp.), the strain is preserved in the China General Microbiological Culture Collection Center (CGMCC), the preservation date is September 4, 2023, and the preservation number is CGMCC NO.28348. The invention further provides a preparation method of the kelp green rot pathogenic bacterium. According to the invention, a strain of pseudoalteromonas HKCH18 is successfully screened, and the pseudoalteromonas HKCH18 has good degradation activity on sodium alginate, agar, sodium carboxymethyl cellulose and starch. When a healthy kelp infection experiment is carried out, healthy kelp can generate green rot diseases, and the green rot diseases are pathogenic bacteria of kelp green rot diseases. The strain can be used for screening kelp strains capable of resisting the kelp green rot disease, and the pathogenesis of the kelp green rot disease can be deeply studied.

Provided is a technology capable of modifying cooked rice cooked using defective rice.　The present technology provides a modifier for defective rice cooking, the modifier comprising a starch degrading enzyme and 4-α-glucanotransferase. The present technology also provides: a method for producing cooked rice, the method involving a rice cooking step for cooking defective rice to which a starch degrading enzyme and 4-α-glucanotransferase have been added; and a method for modifying cooked rice. The present technology further provides cooked rice containing defective rice, wherein the modifier for defective rice cooking according to the present technology is used.