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Seed oil from Harmal (Rhazya stricta Decne) grown in Riyadh (Saudi Arabia): a potential source of δ-tocopherol

Rhazya stricta (R. stricta) known as Harmal is widely distributed in Saudi Arabia and throughout the Middle East. It is used as a medicinal plant in traditional cultures and the seeds are a source of unsaturated oil. In the present study, tocol (tocopherol and tocotrienol), triacylglycerol, and fatt...

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Main Authors: Nehdi, Imededdine Arbi, Mohamed Sbihi, Hassen, Tan, Chin Ping, Al-Resayes, Saud Ibrahim
Format: Article
Language:English
Published: Elsevier BV 2016
Online Access:http://psasir.upm.edu.my/id/eprint/53782/1/Seed%20oil%20from%20Harmal%20%28Rhazya%20stricta%20Decne%29%20grown%20in%20Riyadh%20%28Saudi%20Arabia%29.pdf
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spelling oai:psasir.upm.edu.my:53782 http://psasir.upm.edu.my/id/eprint/53782/ Seed oil from Harmal (Rhazya stricta Decne) grown in Riyadh (Saudi Arabia): a potential source of δ-tocopherol Nehdi, Imededdine Arbi Mohamed Sbihi, Hassen Tan, Chin Ping Al-Resayes, Saud Ibrahim Rhazya stricta (R. stricta) known as Harmal is widely distributed in Saudi Arabia and throughout the Middle East. It is used as a medicinal plant in traditional cultures and the seeds are a source of unsaturated oil. In the present study, tocol (tocopherol and tocotrienol), triacylglycerol, and fatty acid compositions, pigment content, thermal behavior, and various physicochemical properties of R. stricta oil were characterized to determine the potential uses of this seed oil. Our results indicate that the oil is a rich source of bioactive molecules, including δ-tocopherol (896 mg/100 g), γ-tocopherol (148 mg/100 g) and carotenoids (15.67 mg/kg). The oil content of the seeds was 13.68% and the triacylglycerols mainly consisted of linoleic acid (59.03%), and oleic acid (27.01%). The major triacylglycerols were trilinoleate, dilinoleate and monolinoleate. The ratio of unsaturated to saturated fatty acids (UFA/SFA) in the oil was high (9.20). Additionally, the oil showed a high degree of thermal stability and a low melting point of approximately −25 °C. These data indicate that R. stricta seed oil, which is low in saturated fats and rich in bioactive compounds, is potentially useful in food and pharmaceutical applications. Elsevier BV 2016-01 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/53782/1/Seed%20oil%20from%20Harmal%20%28Rhazya%20stricta%20Decne%29%20grown%20in%20Riyadh%20%28Saudi%20Arabia%29.pdf Nehdi, Imededdine Arbi and Mohamed Sbihi, Hassen and Tan, Chin Ping and Al-Resayes, Saud Ibrahim (2016) Seed oil from Harmal (Rhazya stricta Decne) grown in Riyadh (Saudi Arabia): a potential source of δ-tocopherol. Journal of Saudi Chemical Society, 20 (1). pp. 107-113. ISSN 1319-6103; ESSN: 2212-4640 https://www.sciencedirect.com/science/article/pii/S1319610314001331 10.1016/j.jscs.2014.09.005
institution UPM IR
collection UPM IR
language English
description Rhazya stricta (R. stricta) known as Harmal is widely distributed in Saudi Arabia and throughout the Middle East. It is used as a medicinal plant in traditional cultures and the seeds are a source of unsaturated oil. In the present study, tocol (tocopherol and tocotrienol), triacylglycerol, and fatty acid compositions, pigment content, thermal behavior, and various physicochemical properties of R. stricta oil were characterized to determine the potential uses of this seed oil. Our results indicate that the oil is a rich source of bioactive molecules, including δ-tocopherol (896 mg/100 g), γ-tocopherol (148 mg/100 g) and carotenoids (15.67 mg/kg). The oil content of the seeds was 13.68% and the triacylglycerols mainly consisted of linoleic acid (59.03%), and oleic acid (27.01%). The major triacylglycerols were trilinoleate, dilinoleate and monolinoleate. The ratio of unsaturated to saturated fatty acids (UFA/SFA) in the oil was high (9.20). Additionally, the oil showed a high degree of thermal stability and a low melting point of approximately −25 °C. These data indicate that R. stricta seed oil, which is low in saturated fats and rich in bioactive compounds, is potentially useful in food and pharmaceutical applications.
format Article
author Nehdi, Imededdine Arbi
Mohamed Sbihi, Hassen
Tan, Chin Ping
Al-Resayes, Saud Ibrahim
spellingShingle Nehdi, Imededdine Arbi
Mohamed Sbihi, Hassen
Tan, Chin Ping
Al-Resayes, Saud Ibrahim
Seed oil from Harmal (Rhazya stricta Decne) grown in Riyadh (Saudi Arabia): a potential source of δ-tocopherol
author_facet Nehdi, Imededdine Arbi
Mohamed Sbihi, Hassen
Tan, Chin Ping
Al-Resayes, Saud Ibrahim
author_sort Nehdi, Imededdine Arbi
title Seed oil from Harmal (Rhazya stricta Decne) grown in Riyadh (Saudi Arabia): a potential source of δ-tocopherol
title_short Seed oil from Harmal (Rhazya stricta Decne) grown in Riyadh (Saudi Arabia): a potential source of δ-tocopherol
title_full Seed oil from Harmal (Rhazya stricta Decne) grown in Riyadh (Saudi Arabia): a potential source of δ-tocopherol
title_fullStr Seed oil from Harmal (Rhazya stricta Decne) grown in Riyadh (Saudi Arabia): a potential source of δ-tocopherol
title_full_unstemmed Seed oil from Harmal (Rhazya stricta Decne) grown in Riyadh (Saudi Arabia): a potential source of δ-tocopherol
title_sort seed oil from harmal (rhazya stricta decne) grown in riyadh (saudi arabia): a potential source of δ-tocopherol
publisher Elsevier BV
publishDate 2016
url http://psasir.upm.edu.my/id/eprint/53782/1/Seed%20oil%20from%20Harmal%20%28Rhazya%20stricta%20Decne%29%20grown%20in%20Riyadh%20%28Saudi%20Arabia%29.pdf
_version_ 1782723205114363904
score 12.935284

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