Using of Quinoa Based Film to Extend the Shelf Life of Rainbow Trout Fillets under Cold Storage (4±1°C) Condition
Abstract
In this study, the structural features (thickness and light transmittance) of edible films that obtained from quinoa starch were analyzed, and the films were applied to rainbow trout fillets. These fillets were classified under two different groups without quinoa starch film (control) and coated with quinoa starch film (QSBF).Thereafter, these fillets were storage in the refrigerator at (4±1°C) for 12 days. Analyzes were performed on days 0, 3, 9, and 12 during storage to detect chemical and microbial changes in both groups. The film thickness was 0.195 ± 0.010 mm, and the light transmittance values were between 10–37%. At the end of storage, the highest values of chemical analysis were found in the control group 20.35±0.49 mg/100g in (TVB-N), 3.87±0.10 µmol MA/kg in (TBARS) and 6.27±0.00 in (pH), respectively. The highest values of microbial analysis were found in the control group 5.35±0.22 log cfu/g in (TAMB), 3.32±0.48 log cfu/g in (LAB), Pseudomonas 5.72±0.28 log cfu/g and Enterobacteriaceae 4.38±0.68 log cfu/g in the control group respectively, although (TPC) was found 6.84±0.11 log cfu/g in the QSBF group. The results of chemical and microbial analysis showed that statistical difference between control and treatment groups was significant (p<0.05). Quinoa starch-based biofilms (QSBF) had a chemically and microbiologically protective effect on trout fillets that were stored. Further studies are needed to optimize the use of (QSBF) as microbiological and chemical barriers for fish fillet packaging.
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References
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Details
Primary Language
English
Subjects
-
Journal Section
Research Article
Publication Date
December 31, 2019
Submission Date
November 26, 2019
Acceptance Date
December 6, 2019
Published in Issue
Year 2019 Volume: 8 Number: 2
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