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Inter-varietal variation in the composition of seeds and seed oils from winter mel on [Benincasa Hispida (thunb.) cogn.] fruits.

Winter melon (Benincasa hispida), locally known as Kundur, is a vegetable crop, popular, especially among Asian communities both for nutritional and medicinal attributes. In the present work, physicochemical properties of seeds and the extracted seed oils were examined and compared among three culti...

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Main Authors: Anwar, Farooq, Mohammad, Nor Azizah, Othman, Fatimah, Saari, Nazamid
Format: Article
Language:English
Published: University of Karachi 2011
Online Access:http://psasir.upm.edu.my/id/eprint/24138/1/Inter-varietal.pdf
http://psasir.upm.edu.my/id/eprint/24138/
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spelling my.upm.eprints.241382016-06-30T04:52:53Z http://psasir.upm.edu.my/id/eprint/24138/ Inter-varietal variation in the composition of seeds and seed oils from winter mel on [Benincasa Hispida (thunb.) cogn.] fruits. Anwar, Farooq Mohammad, Nor Azizah Othman, Fatimah Saari, Nazamid Winter melon (Benincasa hispida), locally known as Kundur, is a vegetable crop, popular, especially among Asian communities both for nutritional and medicinal attributes. In the present work, physicochemical properties of seeds and the extracted seed oils were examined and compared among three cultivars namely round, oval and hybrid of winter melon. The seeds from round, oval and hybrid fruits, exhibited protein, fiber and ash contents 28.18-42.03, 19.36-26.21 and 5.02- 11.81%, respectively. The oils were extracted based on Soxhlet method by petroleum ether, whilst yields ranged from 17.78- 32.53% (wt/wt). The extracted oils were analyzed for physicochemical parameters, and fatty acids, tocopherols and sterols profiles. The results for specific gravity (25°C), refractive index (nD 25°C), iodine value (IV), saponification value (SV), peroxide value (PV), and free fatty acid (% as oleic acid) were 0.89-0.91 g/mL, 1.4627-1.4646, 119.9-125.1 g I/100 g oil, 182.3-194.1 mg KOH/ g oil, 1.13-1.33 mequiv.O2 /kg, 1.57-2.10%, respectively. The oil color intensity in terms of yellow and red units was 6.9Y + 1.0 R to 8.9Y + 1.9R. The amounts of oil tocopherols as analyzed by HPLC varied widely among the cultivars tested showing α-tocopherol 31.1-207.6 mg/kg and δ-tocopherol 60.4-146.0 mg/kg. According to the GLC analysis linoleic acid (C18:2) was established to be the principal fatty acid (63.10-70.64%) followed by C16:0 (12.45-17.59), C18:1 (8.46-12.87%) and C18:0 (5.13-7.48%). Analysis of oil sterol fractions, using GC and GC-MS, revealed the presence of β-sitosterol (54.62–60.50%), campesterol (15.10–18.50%), stigmasterol (11.00–14.30% and Δ 5 -avenasterol (6.40–8.14 %) as the four main components. Most of the properties of the seed oils analyzed varied significantly among fruit cultivars tested. Overall, we concluded that the seeds, which are under-utilized and often discarded as an agrowate, from winter melon should be explored for extraction of high-linoleic oil with additional tocopherols and phytosterol benefits. University of Karachi 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/24138/1/Inter-varietal.pdf Anwar, Farooq and Mohammad, Nor Azizah and Othman, Fatimah and Saari, Nazamid (2011) Inter-varietal variation in the composition of seeds and seed oils from winter mel on [Benincasa Hispida (thunb.) cogn.] fruits. Pakistan Journal of Botany, 43 (4). pp. 2029-2037. ISSN 0556-332; ESSN: 2070-3368
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Winter melon (Benincasa hispida), locally known as Kundur, is a vegetable crop, popular, especially among Asian communities both for nutritional and medicinal attributes. In the present work, physicochemical properties of seeds and the extracted seed oils were examined and compared among three cultivars namely round, oval and hybrid of winter melon. The seeds from round, oval and hybrid fruits, exhibited protein, fiber and ash contents 28.18-42.03, 19.36-26.21 and 5.02- 11.81%, respectively. The oils were extracted based on Soxhlet method by petroleum ether, whilst yields ranged from 17.78- 32.53% (wt/wt). The extracted oils were analyzed for physicochemical parameters, and fatty acids, tocopherols and sterols profiles. The results for specific gravity (25°C), refractive index (nD 25°C), iodine value (IV), saponification value (SV), peroxide value (PV), and free fatty acid (% as oleic acid) were 0.89-0.91 g/mL, 1.4627-1.4646, 119.9-125.1 g I/100 g oil, 182.3-194.1 mg KOH/ g oil, 1.13-1.33 mequiv.O2 /kg, 1.57-2.10%, respectively. The oil color intensity in terms of yellow and red units was 6.9Y + 1.0 R to 8.9Y + 1.9R. The amounts of oil tocopherols as analyzed by HPLC varied widely among the cultivars tested showing α-tocopherol 31.1-207.6 mg/kg and δ-tocopherol 60.4-146.0 mg/kg. According to the GLC analysis linoleic acid (C18:2) was established to be the principal fatty acid (63.10-70.64%) followed by C16:0 (12.45-17.59), C18:1 (8.46-12.87%) and C18:0 (5.13-7.48%). Analysis of oil sterol fractions, using GC and GC-MS, revealed the presence of β-sitosterol (54.62–60.50%), campesterol (15.10–18.50%), stigmasterol (11.00–14.30% and Δ 5 -avenasterol (6.40–8.14 %) as the four main components. Most of the properties of the seed oils analyzed varied significantly among fruit cultivars tested. Overall, we concluded that the seeds, which are under-utilized and often discarded as an agrowate, from winter melon should be explored for extraction of high-linoleic oil with additional tocopherols and phytosterol benefits.
format Article
author Anwar, Farooq
Mohammad, Nor Azizah
Othman, Fatimah
Saari, Nazamid
spellingShingle Anwar, Farooq
Mohammad, Nor Azizah
Othman, Fatimah
Saari, Nazamid
Inter-varietal variation in the composition of seeds and seed oils from winter mel on [Benincasa Hispida (thunb.) cogn.] fruits.
author_facet Anwar, Farooq
Mohammad, Nor Azizah
Othman, Fatimah
Saari, Nazamid
author_sort Anwar, Farooq
title Inter-varietal variation in the composition of seeds and seed oils from winter mel on [Benincasa Hispida (thunb.) cogn.] fruits.
title_short Inter-varietal variation in the composition of seeds and seed oils from winter mel on [Benincasa Hispida (thunb.) cogn.] fruits.
title_full Inter-varietal variation in the composition of seeds and seed oils from winter mel on [Benincasa Hispida (thunb.) cogn.] fruits.
title_fullStr Inter-varietal variation in the composition of seeds and seed oils from winter mel on [Benincasa Hispida (thunb.) cogn.] fruits.
title_full_unstemmed Inter-varietal variation in the composition of seeds and seed oils from winter mel on [Benincasa Hispida (thunb.) cogn.] fruits.
title_sort inter-varietal variation in the composition of seeds and seed oils from winter mel on [benincasa hispida (thunb.) cogn.] fruits.
publisher University of Karachi
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/24138/1/Inter-varietal.pdf
http://psasir.upm.edu.my/id/eprint/24138/
_version_ 1643828270985117696
score 13.211869

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