公开(公告)号：US12115515B2

公开(公告)日：2024-10-15

申请号：US17427922

申请日：2019-10-22

Applicant: ZHEJIANG UNIVERSITY

Inventor： Enbo Xu ,  Donghong Liu ,  Jianwei Zhou ,  Huan Cheng ,  Tian Ding ,  Xingqian Ye

IPC: B01J20/24 ,  B01J20/06 ,  B01J20/28 ,  B01J20/30 ,  C02F1/28 ,  C02F101/30

CPC classification number: B01J20/24 ,  B01J20/06 ,  B01J20/2808 ,  B01J20/3085 ,  B01J2220/46 ,  C02F1/286 ,  C02F2101/308

Abstract: A preparation method for a nanopore starch-based adsorbent. The method mainly comprises: constructing a large number of lamellar crystals on surfaces of starch granules, and inducing the formation of a nano-scale pore channel structure by means of the lamellar crystals. A large number of control tests have proved that the flaky crystals have direct influence on the formation of the nano-scale pore channel structure. The construction of a pore channel structure in a starch matrix material greatly increases the specific surface area, and improves the adsorption properties. In addition, the method is beneficial to the introduction of functional particles (magnetic particles), and avoids the problem of pore channel blockage due to first forming pores and then introducing functional particles.

公开(公告)号：US11952436B2

公开(公告)日：2024-04-09

申请号：US17267487

申请日：2019-12-03

Applicant: ZHEJIANG UNIVERSITY

Inventor： Shiguo Chen ,  Weiwei Hu ,  Xingqian Ye ,  Huan Cheng ,  Donghong Liu ,  Chantapakul Thunthacha

IPC: C08B37/00

CPC classification number: C08B37/0048

Abstract: The present disclosure discloses a method for extracting pectin rich in RG-I, in particular to an ultrasound and pressure assisted method for extracting pectin rich in RG-I. The main process includes: dispersing sieved citrus peel powers in alkaline solution containing sodium borohydride (20 to 50 mM); performing an ultrasound and pressure combined treatment on the above solution at 25 to 40° C., the treatment conditions include: static pressure of 0.2 to 0.4 MPa, ultrasonic intensity of 0.5 to 3.5 W/mL, and treatment time of 20 to 40 min; centrifuging the ultrasonically processed solution to remove residues, and sequentially carrying out precipitation with ethanol (50% to 80% v/v), precipitant dialysis (3000 to 3500 Da), and vacuum freeze drying on the extracted solution to obtain pectic polysaccharide.

公开(公告)号：US11985993B2

公开(公告)日：2024-05-21

申请号：US17272654

申请日：2020-05-20

Applicant: ZHEJIANG UNIVERSITY

Inventor： Donghong Liu ,  Enbo Xu ,  Jianwei Zhou ,  Hao Wang ,  Tian Ding ,  Huan Cheng ,  Xingqian Ye

IPC: A23L2/54 ,  A23C3/07 ,  A23C3/08 ,  A23C9/152 ,  A23L2/44 ,  A23L2/50 ,  A61L2/025 ,  B01J19/10 ,  C02F1/36 ,  C25B1/04 ,  C25B9/00

CPC classification number: A23L2/54 ,  A23C3/073 ,  A23C3/085 ,  A23C9/1522 ,  A23L2/44 ,  A23L2/50 ,  A61L2/025 ,  B01J19/10 ,  C02F1/36 ,  C25B1/04 ,  C25B9/00 ,  A23V2002/00

Abstract: The present invention discloses an ultrasound-electrode-nano-porous membrane coupling hydrogen production and sterilization system, which comprises a vessel and a plurality of hydrogen production units arranged in the vessel. The hydrogen production unit comprises a cavity, and a broadband ultrasonic generator and a circular hydrogen production electrode located in the cavity. The circular hydrogen production electrode wraps around the broadband ultrasonic generator. A bottom membrane at the bottom of the cavity is hydrophobic at the inner side and hydrophilic at the outer side, and a side membrane of the cavity is hydrophilic at the inner side and hydrophobic at the outer side and is mounted vertically or obliquely upwards by an angle of 0-45 degrees. The system has the functions of continuously and efficiently facilitating self-circulation micro-flow of a liquid system, hydrogen dissolution (as nano-bubbles), conversion from the interface to the bulk phase and dispersion of bubbles, sterilization and others.

公开(公告)号：US11485799B2

公开(公告)日：2022-11-01

申请号：US17267489

申请日：2019-12-03

Applicant: ZHEJIANG UNIVERSITY

Inventor： Xingqian Ye ,  Weiwei Hu ,  Shiguo Chen ,  Huan Cheng ,  Donghong Liu

IPC: C08B37/00

Abstract: The present disclosure discloses an ultrasonic-assisted method of extracting a pectin rich in RG-I. The method includes: (1) dispersing citrus peel powders in an alkaline solution containing sodium borohydride; (2) placing a solution obtained in step (1) in a water bath of 25 to 40° C., and performing an ultrasonic treatment on the solution obtained in step (1); (3) centrifuging the solution subjected to step (2) at a speed of 6000-8000 rpm to remove residues, retaining a supernatant, and precipitating a pectic polysaccharide with absolute ethanol; and (4) adding water to the pectic polysaccharide precipitant subjected to step (3) to obtain a redissolved solution, transferring the solution to a dialysis bag with a molecular weight cut-off of 3000 to 3500 Da, dialyzing for 48 hours, and freeze-drying in a vacuum freezer to obtain the pectin rich in RG-I.

公开(公告)号：US20220056159A1

公开(公告)日：2022-02-24

申请号：US17299116

申请日：2020-06-09

Applicant: Zhejiang University

Inventor： Jianle Chen ,  Xingqian Ye ,  Huan Cheng ,  Shiguo Chen ,  Donghong Liu

IPC: C08B37/00

Abstract: Disclosed is a method for joint recovery of pectin from citrus peels and alkaline/acidic processing water from citrus canning, including the following steps: adding fresh citrus fruit peels to alkali/acid processing water from citrus fruit canning for extracting; filtering the resulting mixture, adding to the resulting filtrate 95% ethanol 1 to 3 times the volume of the filtrate, and then adjusting the pH to a range of 3.5 to 7, followed by standing for 10 minutes to 4 hours; filtering the product after standing, washing the resulting precipitate with 50% to 70% ethanol, and drying and crushing, thereby obtaining pectin. The method makes full use of waste resources from citrus fruit canning, solves the problem of pollution by processing discharge water, and has the advantages of saving the preparation cost of pectin from citrus peels, and improving the solubility of recovered pectin.