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38207

Physicochemical Characterization of Rice (Oryza sativa) Bran Oil from Some Egyptian Rice Varieties

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Last updated: 22 Jan 2023

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Abstract

In view of growing demand on vegetable oils in Egypt. Find a new edible oil sources from non-traditional oil crops has a great interest. The present investigation was aimed to characterize rice bran oil from three Egyptian rice varieties, namely Sakha 106, Giza 178 and Egyptian Yasmine. The crude oil content ranged from15.75 to 21.42%. Physicochemical parameters of the hexane-extracted crude rice bran oils were found to be as follow: specific gravity (30ºC)  (0.8163 - 0.8590), photometric colour index (2.6- 3.96), moisture and volatile matters contents (1.90 - 6.92), saponification value (172.01- 181.21 mg KOH/g), acid value (3.80 - 5.59 mg of KOH/g), free fatty acids% (1.9 - 2.81 %), ester value (168.20- 175.41 mg of KOH/g), peroxide value (0.99 - 5.55 meq/Kg), p-anisidine value (5.90 - 13.63) and totox value (15.10 - 22.90). Furthermore rice bran oil of selected varieties possesses simple fatty acid profile with three fatty acids namely oleic, palmitic and linoleic acids present more than 90% of the fatty acids. Also, rice bran oil of selected varieties was found to contain unsaponifiable matter 3.35 - 4.57%, wax 3.00 - 3.41% and gamma- oryzanol 1.59 - 3.65 gm/100 gm oil. In general, rice bran oil has several physiochemical, compositional and nutritional properties similar to those of traditional vegetable oils; which allow using rice bran oil as an important ingredient of human diet. In addition, the high level of natural antioxidants especially gamma- oryzanol improves the oxidative stability of rice bran oil.

DOI

10.21608/jfds.2017.38207

Keywords

Sakha 106, Giza 178, Egyptian Yasmine, rice bran oil, gamma- oryzanol

Authors

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El-Refai

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A.

Affiliation

Food industries Dept., Fac. Agric., Mans. Univ., Egypt

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Orcid

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First Name

M.

Last Name

Domah

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B.

Affiliation

Food industries Dept., Fac. Agric., Mans. Univ., Egypt

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First Name

M.

Last Name

Askar

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A.

Affiliation

Food industries Dept., Fac. Agric., Mans. Univ., Egypt

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Volume

8

Article Issue

5

Related Issue

6166

Issue Date

2017-05-01

Receive Date

2017-04-15

Publish Date

2017-05-01

Page Start

201

Page End

206

Print ISSN

2090-3650

Online ISSN

2090-3731

Link

https://jfds.journals.ekb.eg/article_38207.html

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https://jfds.journals.ekb.eg/service?article_code=38207

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Original Article

Type Code

886

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Journal

Publication Title

Journal of Food and Dairy Sciences

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https://jfds.journals.ekb.eg/

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Article

Created At

22 Jan 2023