Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13121
ชื่อเรื่อง: Chitosan and chitooligosaccharides from shrimp shell waste: characterization, antimicrobial and shelf life extension in bread
ผู้แต่ง: Rakkhumkaew N.
Pengsuk C.
Keywords: Acetylation
Antimicrobial agents
Bacillus cereus
Bacteriology
Shellfish
Spoilage
Anti-microbial effects
Bread
Chemical treatments
Chitooligosaccharides
Degree of deacetylation
Low molecular weight
Pathogenic microorganisms
Shelf life extensions
Chitosan
วันที่เผยแพร่: 2018
บทคัดย่อ: Chitosan and chitooligosaccharides were extracted from white-leg shrimp shells by chemical treatment. Low molecular weight (13 kDa) and a high degree of deacetylation (54.83%) in chitooligosaccharides led to high water solubility compared to chitosan. Antimicrobial assays indicated that chitosan and chitooligosaccharides exhibited marked inhibitory activity against food-borne pathogenics, spoilage bacterial, and fungal strains tested. However, chitooligosaccharides revealed greater inhibitory effects than chitosan on tested microorganisms. The substitution of flour by chitosan or chitooligosaccharides in bread formulation (1 g/100 g total weight basis) showed antimicrobial effects against Bacillus cereus and Rhizopus sp. growth. Also, the fruity odor in bread containing chitosan or chitooligosaccharides was delayed. Interestingly, the bread containing chitooligosaccharides showed a stronger inhibitory effect against B. cereus and Rhizopus sp. compared to bread containing chitosan and control, where B. cereus and Rhizopus sp. were observed growing on the surface of bread after 4 days of incubation at 30 °C. © 2018, The Korean Society of Food Science and Technology and Springer Science+Business Media B.V., part of Springer Nature.
URI: https://ir.swu.ac.th/jspui/handle/123456789/13121
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047659098&doi=10.1007%2fs10068-018-0332-2&partnerID=40&md5=6b821191524c14578cb9b6d645551c06
ISSN: 12267708
Appears in Collections:Scopus 1983-2021

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