4.5 Article

CFB box wrapping: a new shrink wrapping technology for extension of storage life of colour capsicum (cv. Bachata)

Journal

JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
Volume 58, Issue 8, Pages 3039-3048

Publisher

SPRINGER INDIA
DOI: 10.1007/s13197-020-04807-6

Keywords

Colour capsicum; Box wrapping; Storage life; Weight loss; Firmness; Quality

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Packaging yellow bell peppers with shrink wrapping technology helps reduce moisture loss, maintain freshness, and extend storage life. This method significantly lowers weight loss and preserves firmness under both ambient and low temperature conditions.
Capsicums lose water very rapidly after harvest and the moisture loss causes severe shriveling making them unmarketable within 2-3 days. The moisture loss occurs even under low temperature conditions, though at lesser rates. Bell peppers packed in corrugated fiber board boxes (CFB) tend to lose moisture continuously as these boxes are permeable to both water vapour and respiratory gases even if they are non-ventilated. To reduce the moisture loss and maintain freshness, yellow colour capsicum (cv. Bachata) were packed in CFB boxes and over wrapped with different semi-permeable films using shrink wrapping technology. This box shrink wrapping significantly lowered the weight loss and maintained firmness of capsicum at ambient (25.7-33.2 degrees C and 25-63% RH) and low temperature (8 degrees C +/- 0.5 and 80 +/- 5% RH) conditions. Yellow colour capsicums packed in this way could be stored for 11 days at ambient temperature with a weight loss of < 6% as compared to about 20% weight loss in non-wrapped fruits. The storage life could be extended to 5 weeks by storing these shrink wrapped boxes at 8 degrees C without any shriveling and with a weight loss of < 5%. In addition to maintaining high humidity, the lower O(2)and higher CO(2)levels maintained surrounding the produce in the wrapped boxes helped to avoid shriveling and to retain the quality in terms of surface colour, firmness and other quality traits. The absorption of excessive relative humidity by CFB itself in the over wrapped boxes helped in avoiding condensation of water droplets. This in turn avoided the development of fungal growth and thus the risk of fruit decay.

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