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Please use this identifier to cite or link to this item: http://bsuir.bsum.edu.ng:8080/jspui/handle/11409/748

Title: EFFECT OF TREATMENT WITH OIL EXTRACTED FROM MORINGA (Moringa oleifera) AND SESAME (Sesamum indicum) SEEDS ON THE QUALITY AND SHELF-LIFE OF FRESH TOMATO FRUITS
Authors: OLALEYE, OLADIMEJI OLANIPEKUN
Keywords: Oils, Extracted, Moringa, Sesame, Seeds, Quality
Shelf-Life, Fresh Tomato Fruits
Issue Date: Jul-2019
Abstract: This study examined the “effect of treatment with oils extracted from moringa and sesame seeds on the quality and shelf life of fresh tomato fruits”. Oils were extracted from sesame and moringa seeds using the cold press and Soxhlet extraction methods. The percentage yield and the characterization of the oils were carried out. The antimicrobial properties of the oils were determined invitro and invivo. The tomato fruits were dipped individually into 50% oil Concentrated solutions prepared by diluting the oil with 10% dimethyl sulphur oxide (DMSO) for 5 minutes. Check/control treatment consisted of tomato fruits sprayed with sterilized distilled water. Thereafter, all treated fruits were air dried and placed in an open round plate with minimum of 15 fruits per replicate (3). Observations recorded at 7 days interval at |ambient and refrigeration storage conditions were: firmness, total soluble solid (TSS), pH, total titratable acidity (TTA), ascorbic acid, microbial count (bacteria and mould), % weight loss, percentage decay, lycopene and beta carotene content. Average output oil yield of 28.23 and 46.60 % for sesame and 12.26 and 38.92% for moringa was recorded for cold press and Soxhlet extraction method respectively. The study showed that the oils have good physicochemical properties (non drying oil, low acid value, peroxide value, free fatty acid and high saponification value). The chemical composition showed that the oils contain Varying degree of ester, aldehyde, alcohol, phenols and acid. The oils exhibited varying [degrees of activity against all the microorganisms tested. However, the activities of the ; Soxhlet extracted oils most especially those of sesame seed oil were higher than those of moringa seed oil based on the radial mycelia growth for fungi and zone of inhibition for bacteria. The oils comprising of different coatings on the artificially contaminated fresh Rio i grande (UTC) tomato fruits delayed the appearance of signs of common microbial infections in fruit during storage at both ambient and refrigeration (cold) temperatures. The tested oil coatings did not negatively affect the physicochemical properties of UTC tomato fruits during storage at ambient and cold temperatures except the physiological weight loss that was [adversely affected at ambient temperature. This study showed the potential of the oils (extracted from the oil seeds most especially the oils extracted using Soxhlet extraction method to prevent microbial infections and reduce post-harvest losses in tomato fruits.
Description: Treatment of on-shelf fresh tomato fruits using oils extracted from plant seeds.
URI: http://bsuir.bsum.edu.ng:8080/jspui/handle/11409/748
Appears in Collections:Centre for Food Technology & Research (CEFTER)

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