Abstract

Biochemical changes in response to storage conditions and packaging were investigated in basil leaves of variety Genovese in order to find out suitable conditions for their storage. Fresh basil leaves placed in open trays or packed in lowdensity polyethylene (LDPE) bags were stored at 5, 12°C and under ambient conditions (12.2-21.0°C) for 12days. Chlorophyll content, total phenols, total flavonoids and antioxidant activity of basil leaves decreased with simultaneous increase in electrolyte leakage and TBA reactive compounds during whole storage period. Packaging of leaves and storage at 5°C slowed down the changes in these quality parameters in comparison to those kept in open trays and stored at 12°C and ambient temperature respectively. Activities of enzymes catechol oxidase and lipoxygenase which increased during storage were slowed down by packaging and decrease in storage temperature. Irrespective of storage conditions and packaging, activities of antioxidative enzymes viz. catalase, peroxidase and superoxide dismutase increased during storage. Rapid increase in activities of antioxidative enzymes was observed LDPE packed leaves than those held in open trays and in leaves stored at 5°C as compared to 12°C and ambient temperature. Basil leaves packed in LDPE and stored at 5°C showed the slowest changes in biochemical parameters and the highest activities of antioxidative enzymes and could be stored for 12days in comparison to 6days in open trays at ambient temperature.

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