The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2024
Filed:
Jul. 06, 2020
South China Agricultural University, Guangdong, CN;
Jie Xiao, Guangdong, CN;
Xia Chen, Guangdong, CN;
Jiyang Cai, Guangdong, CN;
Hongsheng Liu, Guangdong, CN;
Wenbo Wang, Guangdong, CN;
SOUTH CHINA AGRICULTURAL UNIVERSITY, Guangdong, CN;
Abstract
The present invention discloses a gradient slow-release active composite film and a preparation method thereof. The active composite film, from inside to outside, is composed of an antioxidative hygroscopic internal layer, at least one gradient anti-microbial antioxidative intermediate layer and at least one waterproof external layer; wherein the antioxidative hygroscopic internal layer is prepared by an alcohol-soluble protein-water-soluble protein substrate and a water-soluble antioxidant; the gradient anti-microbial antioxidative intermediate layer is prepared by an alcohol-soluble protein-water-soluble protein substrate and a lipid-soluble plant essential oil and a water-soluble antioxidant, wherein a mass ratio of the alcohol-soluble protein to the water-soluble protein is (1-2):(1-2); and the waterproof external layer is composed of a hydrophobic alcohol-soluble protein layer.