Abstract: The present disclosure provides a heat-resistant resistant starch (RS) and a preparation method thereof, and belongs to the technical field of food processing. The preparation method includes: preparing a short chain glucan (SCG) into a SCG mixed dispersion with a mass volume concentration of 20% to 100%, and conducting gelatinization to obtain a transparent SCG molecule solution; naturally cooling the transparent SCG molecule solution to allow recrystallization until the transparent SCG molecule solution is cooled to room temperature to obtain a crystallized starch; and freeze-drying the crystallized starch to obtain the heat-resistant RS. The preparation method is green during an entire process and does not involve any organic solvent, thus achieving a breakthrough in the simple and efficient preparation of a heat-resistant high-crystallized starch with a high yield and small particles. In the present disclosure, the heat-resistant RS has higher thermal stability, relative crystallinity, and RS content.

Abstract: The present disclosure belongs to the technical field of starch processing, and in particular relates to slowly digestible starch (SDS) and a preparation method and use thereof. The SDS includes a starch granule and a non-starch polysaccharide coating coated on a surface of the starch granule. In the present disclosure, the non-starch polysaccharide coating coated on the surface of the starch granule can prevent an amylase from contacting the starch granule, increasing contents of the SDS and resistant starch (RS) in the SDS. Therefore, the SDS can delay a digestion process, increase a digestion time of the starch, and reduce the increase of blood glucose and insulin levels after the starch is digested and absorbed.

Abstract: The present invention provides a nanocomposite hydrogel and a preparation method thereof, and relates to the field of nanocomposite materials. The nanocomposite hydrogel is prepared by mixing completely gelatinized short amylose with an aqueous gelatin solution having a mass concentration of 8%-14%, and then cooling. The present invention utilizes the nanoparticles formed by in-situ self-assembly of the short amylose in the aqueous gelatin solution as a reinforcing agent, and the nanoparticles are uniformly distributed in the hydrogel to form a stable crystallization system, such that the prepared nanocomposite hydrogel exhibits optimal mechanical properties in terms of viscoelasticity, hardness, compressive stress, etc. The preparation process of the present invention is green and environmentally friendly, simple and efficient, and can be widely applied to the fields of food, cosmetics and medicine.

Abstract: The present invention provides a nanocomposite hydrogel and a preparation method thereof, and relates to the field of nanocomposite materials. The nanocomposite hydrogel is prepared by mixing completely gelatinized short amylose with an aqueous gelatin solution having a mass concentration of 8%-14%, and then cooling. The present invention utilizes the nanoparticles formed by in-situ self-assembly of the short amylose in the aqueous gelatin solution as a reinforcing agent, and the nanoparticles are uniformly distributed in the hydrogel to form a stable crystallization system, such that the prepared nanocomposite hydrogel exhibits optimal mechanical properties in terms of viscoelasticity, hardness, compressive stress, etc. The preparation process of the present invention is green and environmentally friendly, simple and efficient, and can be widely applied to the fields of food, cosmetics and medicine.

Abstract: An arm assembly for a disc drive. The arm assembly has a load arm for supporting a slider and has a lift tab with a ramp-engaging region for parking the load arm when not in use. This ramp-engaging region has an outer surface defined by a first radius and a second radius different than the first radius.

Abstract: An arm assembly for a disc drive. The arm assembly has a load arm for supporting a slider and has a lift tab with a ramp-engaging region for parking the load arm when not in use. This ramp-engaging region has an outer surface defined by a first radius and a second radius different than the first radius.