The Chemical Composition of Oils and Cakes of Ochna serrulata (Ochnaceae) and Other Underutilized Traditional Oil Trees from Western Zambia

Fraňková, Adéla; Maňourová, Anna; Kotíková, Zora; Vejvodová, Kateřina; Drábek, Ondřej; Riljakova, Bozena; Faměra, O.; Ngula, Mbao; Ndiyoi, Mukelabai; Polesny, Zbynek; Verner, Vladimír; Tauchen, Jan

doi:10.3390/molecules26175210

Cited by 5 publications

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“…Ash contents of the samples ranged between 3.07% (morama) and 6.07% (mogose), which reflects the mineral contents of the oilseeds. Reports indicate that the mesocarp and seed of morama are good sources of essential minerals such as phosphorus, magnesium, potassium, iron, sodium, copper, zinc and calcium 29 . Mogose contained zinc (6 mg/100 g) and iron (3 mg/100 g) 26 , while in Mongongo, essential minerals such as phosphorus, magnesium, potassium, sodium, copper, zinc, and calcium were reported 29 .…”

Section: Resultsmentioning

confidence: 99%

“…Reports indicate that the mesocarp and seed of morama are good sources of essential minerals such as phosphorus, magnesium, potassium, iron, sodium, copper, zinc and calcium 29 . Mogose contained zinc (6 mg/100 g) and iron (3 mg/100 g) 26 , while in Mongongo, essential minerals such as phosphorus, magnesium, potassium, sodium, copper, zinc, and calcium were reported 29 . Calcium, potassium, and manganese were reported in different parts of Citrullus lanatus seeds 30 .…”

Section: Resultsmentioning

confidence: 99%

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2022

IJPSR

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Proximate composition, qualitative screening for phytochemicals (terpenoids, steroids, tannins, oxalates, coumarins, phenols, saponins, and flavonoids) and antioxidant properties in four selected indigenous oilseeds: morama (Tylosema esculentum), mongongo (Schinziophyton rautenenii), mogose (Bauhinia petersiana) and kgengwe (Citrulus lanatus (Thunb.) Mansf.) from Botswana was examined. A significant difference (p≤0.05) was observed in the moisture, fat, protein, ash, carbohydrate, and energy contents. The values ranged from 3. 87 -7.27, 15.99 -57.70, 12.44 -33.76, 3.07 -6.07, and 6.31 -60.01%, respectively, while the range for the energy content was from 422.35 to 655.29 kcal/100g. Only oxalate was not detected in the qualitative tests performed for eight (8) phytochemical compounds with six (6) solvent extracts. The highest total phenolic content was recorded in morama seeds (1.72 mg GAE/mL), while total flavonoids were better in mogose (0.00813 mg CE/g) and kgengwe (0.00404 mg CE/g). The vitamin C equivalent antioxidant capacity (VCEAC) for mogose, morama, and kgengwe were 2.39, 2.07, and 0.78 mg/100 g, respectively. The study indicated that the oilseeds could potentially be used in the pharmaceutical industry as a source of natural antioxidants. The defatted seeds will have the economic benefit and can be exploited to develop different food products, and dietary supplements to prevent some mineral deficiencies. Further studies on the quality of the oils, the antimicrobial effect of the extracts, mineral and vitamin contents, and isolation, identification, and characterization of the phytochemicals will assist in documenting the complete profile of these oilseeds since they are mostly used as components of traditional medicines. INTRODUCTION:Botswana is well endowed with underutilized oil-producing plants due to the insufficiency of knowledge and information on their nutritional value, quality of oils extracted from them, and phytochemical profile.

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Section: Resultsmentioning

confidence: 99%