Volume 3, Issue 1-2, February 2015, Page: 94-99
Shelf-Life and Free Radical Scavenging Activity of Tomato (Lycopersicon Esculentum Mill.) Fruits Coated with Safe Phytochemicals
Felix Managbanag Salas, Dept of Pure & Applied Chemistry, College of Arts & Scences, Visayas State University, Baybay City, Leyte, Philippines
Rosario Algodon Salas, Dept of Horticulture, College of Agriculture & Food Science, Visayas State University, Baybay City, Leyte, Philippines
Vivian Notarte Pole, Dept of Horticulture, College of Agriculture & Food Science, Visayas State University, Baybay City, Leyte, Philippines
Marcelo Amarila Quevedo, PhilRootcrops, Visayas State University, Baybay City, Leyte, Philippines
Received: Oct. 5, 2014;       Accepted: Oct. 24, 2014;       Published: Jan. 29, 2015
DOI: 10.11648/j.jfns.s.2015030102.28      View  4000      Downloads  241
Abstract
This study was conducted to investigate the potential of phytochemical extracts on extending the shelf-life of harvested tomato fruits, and to determine which phytochemical extracts can best enhance its shelf-life. The free radical scavenging activity (FRSA) of tomato fruits coated with phytochemical extracts stored under ambient condition and the toxicity of the phytochemical coatings was also evaluated. Mature green, breaker, and mature red tomato (Diamante max hybrid) fruits were used. The fruits were coated with phytochemical extracts derived from starfruit, cat’s whisker, citronella, cocohusk, ginger, and hagimit. The extraction was accomplished using distilled water, ethyl alcohol, and acetic acid. The shelf-life evaluation of the harvested tomato fruits was conducted in a completely randomized design at ambient condition. The results showed that the phytochemical extracts can potentially enhance the shelf-life of harvested tomatoes. The aqueous hagimit extract (AQHE) was able to extend the shelf-life of mature green tomatoes from 44 days to 97 days which is equivalent to 120 % shelf-life enhancement. The ethanolic hagimit extract (ETHE) extended the shelf-life of breaker tomatoes from 27 days to 83 days which is about 207 % shelf-life enhancement. The acetic acid starfruit extract (AASE) extended the shelf-life of mature red tomatoes from 17 days to 31 days which is tantamount to 82 % enhancement of its shelf-life. These findings suggested the potential application of phytochemical extracts to solve the problem of high perishability of vegetables, particularly on tomatoes. The mature red tomatoes gave the highest FRSA among the three maturity stages of tomato tested. However, the FRSA of mature green and breaker tomatoes increased with shelf-life extension. The sustenance of FRSA on coated mature red tomato with extended shelf-life is noteworthy to consider. Furthermore, the acute toxicity tests revealed that these phytochemical coatings are non-toxic and are safe to use as coatings on agricultural products for human consumption.
Keywords
Cat’s Whisker Extract, Free Radical Scavenging Activity, Hagimit Extract, Phytochemical Extract, Tomato, Starfruit Extract, Toxicity
To cite this article
Felix Managbanag Salas, Rosario Algodon Salas, Vivian Notarte Pole, Marcelo Amarila Quevedo, Shelf-Life and Free Radical Scavenging Activity of Tomato (Lycopersicon Esculentum Mill.) Fruits Coated with Safe Phytochemicals, Journal of Food and Nutrition Sciences. Special Issue: Food Processing and Food Quality. Vol. 3, No. 1-2, 2015, pp. 94-99. doi: 10.11648/j.jfns.s.2015030102.28
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