Department of Food Processing Technology

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Browsing Department of Food Processing Technology by Subject "African olive"

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    Bioactive compounds and antioxidant capacity of African olive (canarium schweinfurthii engl.) fruit pulp and seed
    (Sciencedirect, 2026-04-09) Tabula, Arthur; Tobias Pointner; Lili Daroczi; Pignitter Marc; Nakyinsige Khadijah; Bamuwamye Michael; Otmar Hoeglinger
    This study characterized polyphenols and tocopherols, as well as determined the antioxidant capacity of the Canarium schweinfurthii Engl. fruit pulp and seed. Samples were obtained from Kamuli, Luwero and Mayuge districts of Uganda. Total polyphenol content was determined using the Folin-Ciocalteu assay. Polyphenols were fractionated using Liquid Chromatography-tandem Mass Spectrometry technique. Tocopherols (α-, γ- and δ-) were quantified using High Performance Liquid Chromatography-Ultraviolet. The antioxidant capacity of the fruit pulp was assessed using Trolox Equivalent Antioxidant Capacity (TEAC) and Ferric Ion Reducing Antioxidant Power (FRAP). Total polyphenol content of the fruit pulp and seed extracts ranged from 73.93 to 92.43 and 132.66 to 146.74 mg GAE/g, respectively. The fruit pulp and seed extracts contained phenolic acids (1.3-Dicaffeoylquinic acid, 4-hydroxybenzoic acid, chlorogenic acid, ferulic acid, gallic acid, quinic acid, cinnamic acid and p-coumaric acid), flavonoids (amentoflavone, eriodictyol, gallocatechol, herbacetin and quercetin-3-O-glucoside) and lignans (pinoresinol). The tocopherol content of the fruit pulp and seed extracts was correspondingly 3.83 to 4.98 mg/kg and 38.54 to 62.47 mg/kg. The major tocopherol isomers quantified were the alpha, gamma and delta. The antioxidant capacity of the fruit pulp extracts by TEAC assay was from 2.74 to 5.43 and by FRAP assay from 4.36 to 6.16 µmol TE/g dry weight. The fruit’s antioxidant capacity may be attributable to phenolic acids, flavonoids and lignans, and tocopherols. In addition to its use as a food, the gamut of bioactives and antioxidant capacity support Canarium schweinfurthii’s potential therapeutic applications.
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    The potential contribution of Canarium schweinfurthii Engl. fruit pulp in the management of type 2 diabetes mellitus
    (Discover Sustainability, 2024-03-20) Arthur, Tabula; Michael Bamuwamye; Khadijah Nakyinsige
    Diet is the main modifiable risk factor underlying the progression of Type 2 Diabetes mellitus (T2DM). The African olive (Canarium schweinfurthii Engl.) of the family Burseraceae and genus Canarium is a source of food and medicine. This review summarized information on the nutritional and chemical composition of the Canarium schweinfurthii Engl. fruit pulp and explored its potential application in the management of T2DM. The literature search covered scientific databases comprising of Science Direct, Springer, Multidisciplinary Digital Publishing Institute, Science Hub and Google Scholar, from April 2023 up to January 2024. The following keywords were used: “Canarium schweinfurthii Engl.”, “Canarium schweinfurthii Engl. fruit pulp”, “Canarium schweinfurthii Engl. nutrition value, chemical composition and bioactive compounds”, “Canarium schweinfurthii Engl. against T2DM”, and “Nutritional requirements for T2DM”. This review evaluates the current state of research of global literature from 1992 to 2022 (n = 450) on Canarium schweinfurthii Engl. and T2DM. Data and information from literature (n = 115) was included in the review. The results of different studies showed that Canarium schweinfurthii Engl. fruit was composed of a wide range of nutritional and chemical components such as minerals, amino acids, fatty acids and vitamins. In addition, the fruit contains bioactive compounds reported to be effective against T2DM. Canarium schweinfurthii Engl. contains phytochemicals such as saponins, phenolics, alkaloids and flavonoids that have positive effects on cardio-metabolic health. Although the T2DM therapeutic effects of Canarium schweinfurthii bark stem extracts and fruit pulp oil have been reported, the therapeutic potential of the whole fruit pulp is yet to be reported.