Effect of Konjac Powder and Moringa Seed Oil Extract Coating on the Postharvest Quality of Cherry Tomato

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Thita Soonthornvipat

Abstract

This research studies the effect of konjac powder and moringa seed oil extract on the postharvest quality of cherry tomato when stored at 15 days at ambient temperature 28±2°C, relative humidity 72-78%. The results showed that konjac coating with 25 ml of moringa seed oil extract helped to reduced fresh weight loss on coating tomatoes with konjac and moringa seed oil extract with 10 15 and 20 ml per l including better than without coating (p < 0.05) respectively. It was found tomatoes without coating enhanced fresh weight loss along the storage time (15 days) as same as the firmness. The results showed that tomatoes coating with konjac and moringa seed oil 10, 15, 20, and 25 ml per l had firmness more than tomatoes without coating (p < 0.05). The measurement of ascorbic acid, found that tomatoes coating with moringa seed oil extract in every concentration had low ascorbic acid changing compared with tomatoes without coating (p < 0.05). For the physical appearance such as colour (L*, a*, and b*) and chemical compositions which is total soluble solid, titratable acidity and pH, the results showed that tomatoes coating with moringa seed oil extract in every concentration and tomatoes without coating were not significant (p > 0.05). Therefore, the results of using natural edible coating with moringa seed oil extract coating tomatoes might be the alternative choice for retail farmers that they can use local material to reduce the cost of agricultural production. Additionally, this can be environmental friendly for extending the shelf life of cherry tomatoes in the future.

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บทความวิจัย (Research Articles)

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