公开(公告)号：US20240174770A1

公开(公告)日：2024-05-30

申请号：US18525796

申请日：2023-11-30

Applicant: Jiangnan University

Inventor： Xing ZHOU ,  Xiaoli LIANG ,  Zhengyu JIN ,  Ren WANG ,  Zhengjun XIE ,  Jianwei ZHAO ,  Jie LONG ,  Long CHEN ,  Chao QIU

IPC: C08B30/12 ,  A23L29/30

CPC classification number: C08B30/12 ,  A23L29/30

Abstract: A method for preparing V-type porous starch includes: mixing starch and a first ethanol solution in a reaction kettle, adding concentrated hydrochloric acid to the reaction kettle for acidity regulation, and controlling a temperature of a reaction system in the reaction kettle at 80-150° C.; cooling the reaction kettle, and adding a sodium hydroxide solution to the reaction system in the reaction kettle, until a pH of a mixture in the reaction kettle is neutral, to yield a starch solution; and centrifuging the starch solution, washing a collected precipitate with a second ethanol solution, leaching, drying, cooling, and pulverizing, to yield V-type porous starch.

公开(公告)号：US20210371302A1

公开(公告)日：2021-12-02

申请号：US17402871

申请日：2021-08-16

Applicant: Jiangnan University

Inventor： Jinpeng WANG ,  Jing LI ,  Zhengyu JIN ,  Xueming XU ,  Yaoqi TIAN ,  Jie LONG ,  Xing ZHOU ,  Zhengjun XIE

IPC: C02F1/28 ,  B01J20/24 ,  B01J20/28 ,  B01J20/30

Abstract: The disclosure provides a modified cyclodextrin/mesoporous silica for adsorbing Pb and Cd and application thereof, belonging to the technical field of adsorbent materials. By using surface modification, chloroacetic acid is used as anions, and a modified cyclodextrin is grafted onto a surface of a cyclodextrin/mesoporous silica by nucleophilic substitution to prepare the modified cyclodextrin/mesoporous silica adsorbent material. The modified cyclodextrin/mesoporous silica adsorbent material prepared in the disclosure has the advantages of simple preparation method, strong adsorbability, easy separation, good biocompatibility and the like. When the material is used as an adsorbent to adsorb heavy metal ions Pb2+ and Cd2+, maximum removal rates can reach 97.8% and 81.29% respectively. Therefore, the material has wide application prospects in removal of heavy metals in sewage and the like, thereby improving the water environment that people depend on for survival.

公开(公告)号：US20200054050A1

公开(公告)日：2020-02-20

申请号：US16537628

申请日：2019-08-12

Applicant: Jiangnan University

Inventor： Xing ZHOU ,  Wanglu BAO ,  Zhengyu JIN ,  Jianwei ZHAO ,  Jinpeng WANG ,  Tingting MENG ,  Ren WANG

IPC: A23L7/126 ,  A23L7/139 ,  A21D13/02

Abstract: A method of preparing the instant whole wheat crisps includes: using whole wheat grains as raw materials, fully soaking the whole wheat grains to make the whole wheat grains absorb water until saturating, and then performing cooking, extruding, sheeting, and microwave vacuum drying to obtain the instant whole wheat crisps. In the present disclosure, no artificial additive is added in the processing process, and the wheat grains are extruded and dried at a low temperature, which conforms to the current trend of “clean label” foods. Moreover, the whole wheat grains are processed into crisps, which are unadulterated whole wheat foods and conforms to the current trend of whole grains.

公开(公告)号：US20190194708A1

公开(公告)日：2019-06-27

申请号：US16288765

申请日：2019-02-28

Applicant: Jiangnan University

Inventor： Yuxiang BAI ,  Zhengyu JIN ,  Liuxi XIA ,  Yun WU ,  Xueming XU ,  Zhengjun XIE ,  Jinpeng WANG ,  Xing ZHOU

IPC: C12P19/04 ,  C12P19/18

CPC classification number: C12P19/04 ,  C12P19/18 ,  C12P19/20

Abstract: The disclosure herein relates to a method for preparing branched cyclodextrin and application thereof, and belongs to the technical field of synthesis of branched cyclodextrin. The method comprises the following steps: (1) dissolving maltodextrin in a phosphate buffer solution, and adding CGTase for reacting; (2) reducing enzyme activity by a physical method; and (3) adding a saccharifying enzyme to the reaction system of step (2), and performing high-temperature enzyme deactivation to obtain the branched cyclodextrin. The method has mild reaction conditions, and at the same time, cyclodextrin and unreacted substrates can be hydrolyzed via the weak coupling activity of CGTase, thereby realizing effective separation of the branched cyclodextrin.

公开(公告)号：US20220243238A1

公开(公告)日：2022-08-04

申请号：US17566724

申请日：2021-12-31

Applicant: Jiangnan University

Inventor： Xing ZHOU ,  Zhengyu JIN ,  Qing CHANG ,  Ren WANG ,  Jinpeng WANG ,  Jianwei ZHAO ,  Aiquan JIAO ,  Jie LONG

IPC: C12P19/04 ,  C12P19/14 ,  C08B30/12

Abstract: A method for preparing V-type granular porous starch includes the following steps: mixing starch and an ethanol aqueous solution in a temperature of 100-150° C. to yield V-type granular starch; and adding a mixed enzyme including alpha-amylase and amyloglucosidase to a mixture of the V-type granular starch and the ethanol aqueous solution, to enzymatically hydrolyze the V-type granular starch to yield V-type granular porous starch.

公开(公告)号：US20240060062A1

公开(公告)日：2024-02-22

申请号：US18489954

申请日：2023-10-19

Applicant: Jiangnan University

Inventor： Jie LONG ,  Ziying YE ,  Zhengyu JIN ,  Cheng Lu ,  Xingfei Li ,  Yaoqi TIAN ,  Yuxiang BAI ,  Xing ZHOU ,  Chao QIU ,  Long CHEN ,  Zhengjun XIE

IPC: C12N9/38 ,  C12N15/63

CPC classification number: C12N9/2468 ,  C12N15/63 ,  C12Y302/01081

Abstract: Disclosed are an agarase mutant with improved thermal stability and application thereof, belonging to the fields of genetic engineering technology and enzyme engineering. The present disclosure provides an agarase mutant, which is obtained by mutating the amino acid at the 86th site, the 373rd site, the 374th site, the 496th site, the 507th site, or the 747th site of agarase with an amino acid sequence as shown in SEQ ID NO.1. The agarase mutant provided by the present disclosure improves the thermal stability and the hydrolytic activity of the agarase. Compared with the wild type enzyme, the mutant enzyme shows excellent heat resistance and can be industrially used at a relatively high temperature, so that the utilization rate of agar raw materials and the yield of oligosaccharides from agar are improved, and the mutant enzyme has a good industrial application prospect.

公开(公告)号：US20210147581A1

公开(公告)日：2021-05-20

申请号：US17097008

申请日：2020-11-13

Applicant: Jiangnan University

Inventor： Xing ZHOU ,  Tingting MENG ,  Zhengyu JIN ,  Ren WANG ,  Jianwei ZHAO ,  Jinpeng WANG ,  Aiquan JIAO ,  Xueming XU

IPC: C08B30/14

Abstract: A method for producing a cold-water-soluble starch. The method includes: 1) adding a starch and 3-45 wt. % of an ethanol aqueous solution to a container, and stirring a mixture of the starch and the ethanol aqueous solution in the container, thus yielding a starch-ethanol-water; 2) introducing the starch-ethanol-water to an extruder and producing a noodle extrudate, where the extruder comprises 3 continuous temperature control areas: a first area having a temperature of 50° C., a second area having a temperature of between 95 and 120° C., and a third area having a temperature of 60° C.; a rotation speed of the extruder is 70-150 rpm; and the noodle extrudate has a diameter of 0.2-0.5 cm; 3) pressing and roll slitting the noodle extrudate, thus yielding a plurality of slices; and 4) drying the plurality of slices in a microwave vacuum oven, cooling, and pulverizing the plurality of slices.