Mango kernel starch as a novel edible coating for enhancing shelf-life of tomato (Solanum lycopersicum) fruit

被引:135
作者
Nawab, Anjum [1 ]
Alam, Feroz [1 ]
Hasnain, Abid [1 ]
机构
[1] Univ Karachi, Dept Food Sci & Technol, Karachi 75270, Pakistan
关键词
Edible coatings; Mango kernel starch; Tomato; FUNCTIONAL-PROPERTIES; POSTHARVEST QUALITY; RHEOLOGICAL PROPERTIES; FILMS; MAINTAIN; CHITOSAN; AMYLOSE; PERMEABILITY; BARRIER; STORAGE;
D O I
10.1016/j.ijbiomac.2017.05.057
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Mango kernel starch (MKS) coatings containing different plasticizers were used to extend the shelf life of tomato. The coating slurry was prepared by gelatinizing 4% mango kernel starch, plasticized with glycerol, sorbitol and their 1:1 mixture (50% of starch weight; db). The samples were kept at room temperature (20 degrees C) and analyzed for shelf life. Significant difference in coated and control fruits were observed and all the coated fruits delayed ripening process that was characterized by reduction in weight loss and restricted changes in soluble solids concentration, titratable acidity, ascorbic acid content, firmness and decay percentage compared to uncoated sample. The formulations containing sorbitol were found to be the most effective followed by combined plasticizers (glycerol: sorbitol) and glycerol. Sensory evaluation conducted to monitor the change in color, texture and aroma also proved the efficacy of MKS coating containing sorbitol by retaining the overall postharvest quality of tomato during the storage period. The results showed that MKS could be a promising coating material for tomatoes that delayed the ripening process up to 20 days during storage at 20 degrees C with no adverse effect on postharvest quality. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:581 / 586
页数:6
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