Tropical Fruits
Xuan Phong Huynh; Ngoc Thanh Nguyen; Minh Chau Luu; Thi Ngoc Bich Bui; Hoang Dang Long Bui; Bach Long Tran; Thi Kim Ngan Tran
Abstract
Purpose: King orange (Citrus reticulata × sinensis) is a fruit spices native to tropical and subtropical regions that holds significant economic and nutritional value and is widely consumed in daily life. The primary chemical constituents of king orange include flavonoids (such as hesperidin and ...
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Purpose: King orange (Citrus reticulata × sinensis) is a fruit spices native to tropical and subtropical regions that holds significant economic and nutritional value and is widely consumed in daily life. The primary chemical constituents of king orange include flavonoids (such as hesperidin and naringin), organic acids, vitamin C, and phenolic compounds. Due to its unique biological properties, nutritional benefits, and divers pharmacological effects, king orange is not only a widely consumed fruit but also a promising ingredient for developing natural functional foods, pharmaceuticals, and cosmetics. This study investigated the distribution of bioactive compounds and the antioxidant capacity in different tissues of king orange cultivated in four provinces of the Mekong Delta, Vietnam. Research Method: Physical characteristics of the fruit were analyzed, and phytochemical screening was performed identify secondary metabolites. Flavonoid and phenolic contents were quantified, and antioxidant activity was assessed using the DPPH assay. Findings: The fruits had thick, juicy flesh (42.4-51.2% w/w) and thin peel (27.2-35.2% w/w). Alkaloids, flavonoids, phenolics, and saponins were detected in both juice and peel extracts, while terpenoids were found only in the peel. The juice had the highest flavonoid and phenolic content, followed by flavedo and albedo extracts. Antioxidant activity was highest in the juice from "Can Tho" and in the peel extracts from "Vinh Long". Research limitations: No limitations were encountered. Originality/Value: Orange juice and peel are rich in bioactive compounds with antioxidant properties, highlighting their potential for health-promoting applications. Citrus reticulata is not only a widely consumed fruit but also a promising raw material for the development of natural functional food, pharmaceutical, and cosmetic products.
Food Science and Technology
Jacobs Adesina; Yallappa Rajashaker; Thomas Inomisan Ofuya
Abstract
Purpose: A study was carried out to determine the potentiality of Bridelia micrantha (BM) as biofumigant for the control of some economically important insect pests of stored food grains. Research Method: BM powder was sequentially extracted with a series of solvents of increasing polarity in a Soxhlet ...
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Purpose: A study was carried out to determine the potentiality of Bridelia micrantha (BM) as biofumigant for the control of some economically important insect pests of stored food grains. Research Method: BM powder was sequentially extracted with a series of solvents of increasing polarity in a Soxhlet apparatus and concentrated by the rotatory evaporator. The residues were dissolved in 50ml methanol, assayed for insecticidal activity by fumigant toxicity. Effective and active extract which showed maximum activity was selected for analysis using Gas Chromatography-Mass Spectrometry (GC-MS). Findings: Ethyl acetate crude extract and its active fraction (50% hexane: 50% ethyl acetate) showed more potent insecticidal activity with increasing concentration and exposure time. Among the insect species Tribolium castaneum is more susceptible and Rhyzoperthadominica tolerant of the fumigant toxicity treatments. GC-MS analysis revealed that Dibutyl phthalate (96%), 3-Dodecen-1-al (87%), 13-docosen-1-ol (83%) Ethanol-2-(2-butoxyethoxy) (80%), 2-Butenoic acid, 2 propentl (47%), 4-Hydroxyphenylacetic acid (38%) and Phenyl salicylate (30%) were the major constituents out of the eleven bioactive compounds identified. Research limitations: There were no limitations to report. Originality/Value: The results suggested that B. micrantha may be utilized as a good potential herbal fumigant for the management of stored product-insect pests due to its potent insecticidal activity and chemical composition which contains many different chemicals that have different modes of action on target pests and effective in the conservation of the germinative power of the various food grains.
