公开(公告)号：US12193532B2

公开(公告)日：2025-01-14

申请号：US18561291

申请日：2021-06-01

Applicant: NANJING FORESTRY UNIVERSITY

Inventor： Chao Deng ,  Farzad Seidi ,  Qiang Yong ,  Xiangyu Jin ,  Chengcheng Li ,  Haiying Wei

IPC: D06M13/328 ,  A41D13/11 ,  B32B5/02 ,  B32B5/26 ,  B32B7/02 ,  D04H1/26 ,  D04H1/425 ,  D04H1/4291 ,  D04H1/4374 ,  D04H1/4382 ,  D04H1/492 ,  D04H3/16 ,  D06M13/355 ,  D06M13/395 ,  D06M16/00 ,  D06M101/30

Abstract: An antibacterial and antiviral degradable mask and a manufacturing method thereof are provided. From outside to inside, the mask sequentially comprises a surface layer (1), a core layer (2), and an inner layer (3) that contacts the face; the surface layer (1) is made of an antibacterial and antiviral cellulose spunlace non-woven fabric; the core layer (2) is made of a polypropylene melt-blown non-woven fabric; the inner layer (3) is made of a polypropylene spunbond non-woven fabric or a degradable natural cotton fabric. The mask can have both antibacterial and antiviral functions; moreover, the material is degradable, and thus, environmental pollution pressure caused by non-degradable petroleum-based fiber materials such as polypropylene can be effectively relieved.

公开(公告)号：US12287353B2

公开(公告)日：2025-04-29

申请号：US18844070

申请日：2023-08-31

Applicant: NANJING FORESTRY UNIVERSITY

Inventor： Caoxing Huang ,  Xiaoxue Zhao ,  Qiang Yong ,  Chenhuan Lai ,  Yongcan Jin

IPC: G01Q60/38 ,  C12Q1/40 ,  G01Q60/28 ,  G01Q60/42

Abstract: A method for characterizing the interaction force between lignin and cellulase is provided. The method includes the following steps: (1) preparing a lignin solution, then dropwise adding the solution onto a silicon wafer, repeatedly spin-coating with a spin coater, and vacuum-drying the prepared lignin film; (2) modifying an AFM probe coated with a gold film on the surface with HS-PEG-COOH and then activating the carboxyl group, immersing the AFM probe after the carboxyl group activation in a PBS solution of cellulase for incubation, and after the modification is completed, placing the washed AFM probe in a PBS buffer solution for storage for later use; (3) testing the lignin-cellulase interaction force by using an AFM instrument in a liquid phase environment.

公开(公告)号：US11999984B2

公开(公告)日：2024-06-04

申请号：US18274770

申请日：2021-05-06

Applicant: NANJING FORESTRY UNIVERSITY

Inventor： Caoxing Huang ,  Qiang Yong ,  Yuheng Tao ,  Chenhuan Lai ,  Yong Xu ,  Xin Li

IPC: C12P19/04 ,  C12N9/24 ,  C12N9/26 ,  C12N9/40

CPC classification number: C12P19/04 ,  C12N9/2465 ,  C12N9/2491 ,  C12Y302/01022 ,  C12Y302/01025

Abstract: A method and special complex enzyme for hydrolyzing a galactomannan (GM) to prepare a small-molecule GM and a galactomannan oligosaccharide (GMOS) is provided. The method includes: conducting fermentation with microcrystalline cellulose (MCC) and melibiose as carbon sources and Trichoderma reesei (T. reesei) as an enzyme-producing strain to obtain a supernatant, which is a complex enzyme solution with enzymatic activities of β-mannanase and α-galactosidase; and directly using the complex enzyme solution for enzymatic hydrolysis of a GM as a substrate to prepare the small-molecule GM and the GMOS.