Abstract
The present investigation is aimed at developing films using biomass of seaweed Kappaphycus alvarezii blended with natural additives both without glycerol (K) and with glycerol (KG) and to use the same in enhancement of shelf life of tomatoes. The natural additives used were Azadirachta indica oil (K1), A. indica leaves extract (K2), Citrus limon leaves extract (K3), A. indica gum (K4), Prunus amygdalus gum (K5), Moringa indica gum (K6) and the extract and oil of A. indica leaves (K7). The result showed that the moisture content ranged from 10.3 ± 1.2–19.9 ± 0.4%, thickness 0.01–0.10 mm, and swelling index above 45% in all the prepared films. The tensile strength and transparency were higher for K6, KG6, K and KG respectively. KG6 and K3 films showed maximum phenolic content, antioxidant and antimicrobial activity. The promising results of current investigation proved the suitability of the film in enhancing the shelf life of tomatoes to 14 days at room temperature.
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