Characteristics and composition of melon and grape seed oils and cakes

Abstract

Watermelon (Citrullus vulgaris) and grape (Vitis vinifera) seeds were investigated for their nutritional quality and oil characteristics. The yields of seeds on an as is basis (edible portion) were 1.6 and 1.8% for grape and melon, respectively. The melonseed on a dry weight basis consisted of 53.6% testa and 46.4% kernel. The crude protein, fat and fiber content were 16.4, 23.1 and 47.7% for melon and 8.2, 14.0 and 38.6% for grape (dry weight basis). Both seeds were found to contain significant levels of Ca, Mg, P and K. The fatty acid profiles showed an unsaturated fatty acid content of 76.1% for melonseed oil and 88.6% for grapeseed oil. The predominant fatty acid in both seeds was linoleic acid. The iodine value, saponification number and acid value were 116, 248 and 0.97 for melonseed oil and 132, 194 and 1.59 for grapeseed oil. The amino acid profiles of both seed cake proteins were determined and compared with hen's egg protein.

Investigating Some Physicochemical Properties and Fatty Acid Composition of Native Black Mulberry (Morus nigra L.) Seed Oil

“…This finding was higher than the ash content of grapeseed (i.e. 2.2%) reported by Kamel and Dawson [31]. Plants absorb minerals during the growing season.…”

“…Protein content of the seeds showed good correlation with the results of previous studies on mulberries [18,19] in which 21.2 and 29.4% crude protein was found, respectively. As indicated by Kamel and Dawson [31], the protein content of grape seed was 8.2% and it was 10.12-11.81% according to Fantozzi [32] where both of the findings were lower than the protein content of mulberry seeds found in the present study. Additionally, the mulberry seed contains a protein content similar to cottonseed, which was found to be 22.32% by Sawan et al [33].…”

Food potentials of some unconventional oilseeds grown in Nigeria — A brief review

“…The oil yield from C. vulgaris species was the highest followed by C. lanatus. The purified oil t~ Kamel et al (1985), Badifu (1988), Oyenuga and Fetuga (1975), Oke (1965), resp. Oyolu (1977), Akobundu et al (1982), resp.…”

Characteristics and Composition of Watermelon Seed Oil and Solvent Extraction Parameters Effects

“…The juice or pulp from watermelon is used for human consumption while rind and seeds are major solid wastes [2]. The rind is utilized for products such as pickles and preserves as well as for extraction of pectin [3], whereas seeds are a potential source of protein [4][5][6] and lipids [7]. Melon seeds are used for oil production at the subsistence level in Nigeria, in several other African countries, and in the Middle East.…”

“…In Nigeria, such seeds are used for oil extraction at the village level but not on an industrial scale for oil or protein production. The dry seed of watermelon has been reported to contain on average about 32 g of protein and 51.4 g of fat per 100 g sample [6]. There are a few reports in the literature about the fatty acid compositions of seed oils from some varieties of watermelons and some acknowledgement of the good quality of these seed oils [7,8].…”