Gurum (Citrullus lanatus var. Colocynthoide) seed: lipid, amino acid, mineral, proximate, volatile compound, sugar, vitamin composition and functional properties
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Gurum (Citrullus lanatus var. Colocynthoide) seed was evaluated for lipid, amino acid, mineral, proximate, sugar, vitamin composition, volatile compound and functional characteristics in seeking to identify nutritious plant containing a higher amount of nutrients that can be employed in food related industries. The gurum seed was found to be rich in fat (33.05%), crude fiber (26.42%), protein (18.55%), carbohydrates (14.41%), and ash (3.40%) and it has sufficient amino acids content. The gurum seed was found to have a higher content of minerals with potassium 2116.83 mg/100 g among highest followed by sodium 461.23 mg/100 g and magnesium 405.63 mg/100 g. Calcium, zinc, iron, copper and manganese are also present in a significant amount. Gurum seeds could be used as an affluent source of vitamins, mainly B6 and B9 with the amounts of 11.37 and 9.24 mg/100 g respectively, while sucrose constituted 41.5% of the all sugars. Oil of gurum seed has an altitude amount of unsaturated fatty acids, with C18:2 and C18:1 as the major acids, whereas, triglycerides as a major component of lipid classes. The gurum seed showed water absorption 3.46 mL /g and oil absorption 2.39 mL/g. The foaming capacity, stability of foam and emulsifying capacity were 18.5%, 16.55%, and 44.2%, respectively. 49 volatile compounds from the extract of gurum seeds were identified; with organic acids as a prime component. This study has shown the potentials of gurum seed, a by-product with a high nutritional value to provide sufficient economic resourceful raw material alternative to food industrial firms.
KeywordsGurum (Citrullus lanatus var. Colocynthoide) seeds Nutritional quality Fat composition Functional properties Volatile compounds
E. K. Greatly acknowledges his doctoral Chinese Government Scholarship (CSC) for his study at Jiangnan University. This study was financially supported through “Department of Program of Science and Technology, Jiangsu Province” (BY2016022-33).
Compliance with ethical standards
Conflict of interest
The authors declare no conflict of interest.
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