Journal
CYTA-JOURNAL OF FOOD
Volume 21, Issue 1, Pages 334-343Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/19476337.2023.2199833
Keywords
Fruit decay; aerobic mesophilic bacteria; yeast and mould; fruit quality
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Granny Smith apples are prone to quality deterioration and microbial decay during retail handling and marketing display. This study explored the effectiveness of using edible coatings, specifically zein and zein-nisin, as alternative packaging under retail conditions. The results showed that zein coating significantly delayed weight loss and zein-nisin coating effectively reduced yeast, mould, and TAMB count.
Granny Smith apples are susceptible to quality deterioration and microbial decay during retail handling, and marketing display in plastic bags. Therefore, the effectiveness of coating as alternative packaging under retail condition was explored. Impact of edible coatings: zein, zein combined with nisin (zein-nisin) on maintaining various qualities microbial load on Granny Smith apples stored at 15 degrees C for 21 days was investigated and compared with control samples. Results showed that weight loss (%) was highest in control samples (30%) by day 14, while zein edible coating significantly delayed weight loss till the end of storage day 21 (p = .05). Overall, changes in hue angle (h degrees), titratable acidity (TA), total soluble solids (TSS), and firmness were not significantly impacted by coating. However, the application of Zein-nisin coatings effectively resulted in-1.5 log and-3 log reduction by the end of storage day 21 in yeast and mould, and TAMB count, respectively.
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