نتایج جستجو برای: oil rancidity indexes

تعداد نتایج: 161535  

Journal: :Korean Journal of Food Preservation 2018

2018
Rogers E Harry-O'kuru Girma Biresaw Sherald Gordon Jingyuan Xu

Jojoba liquid wax is a mixture of esters of long-chain fatty acids and fatty alcohols mainly C38:2-C46:2. The oil exhibits excellent emolliency on the skin and, therefore, is a component in many personal care cosmetic formulations. The virgin oil is a component of the seed of the jojoba (Simmondsia chinensis) plant which occurs naturally in the Sonora Desert in the United States and northwester...

2011
Wu Zhendong Xu Huijuan Chen Mei

Abstract This paper establishes the risk assessment index system according to characteristics of oil and gas drilling engineering cooperation project. After modularizing risk indexes of oil and gas drilling engineering cooperation project into eight clusters, risks are evaluated on the basis of multi-level fuzzy comprehensive evaluation method. The study is to construct risk assessment indexes ...

ارجمند, پرهام, محمدی جعفری, مهدیه, پورآذرنگ, هاشم , یزدان پناه, صدیقه,

Antioxidant activity of pomegranate (Punica granatum) peel extract (PPE), extracted by either methanol or ethanol solvent, was studied by phosphomolybdenum method. Antioxidant activity of methanolic PPE was higher than the other. To evaluate heat stability of PPE in sunflower oil, the rancidity rate of the oil was compared at 90, 120, and 150ºC with those containing α-tocopherol and synthetic B...

Journal: :Molecules 2011
Uma Devi Palanisamy Muniswaran Sivanathan Ammu Kutty Radhakrishnan Nagaraja Haleagrahara Thavamanithevi Subramaniam Gan Seng Chiew

Ostrich oil has been used extensively in the cosmetic and pharmaceutical industries. However, rancidity causes undesirable chemical changes in flavour, colour, odour and nutritional value. Bleaching is an important process in refining ostrich oil. Bleaching refers to the removal of certain minor constituents (colour pigments, free fatty acid, peroxides, odour and non-fatty materials) from crude...

ژورنال: علوم آب و خاک 2009
ارجمند, پرهام, محمدی جعفری, مهدیه, پورآذرنگ, هاشم , یزدان پناه, صدیقه,

Antioxidant activity of pomegranate (Punica granatum) peel extract (PPE), extracted by either methanol or ethanol solvent, was studied by phosphomolybdenum method. Antioxidant activity of methanolic PPE was higher than the other. To evaluate heat stability of PPE in sunflower oil, the rancidity rate of the oil was compared at 90, 120, and 150ºC with those containing α-tocopherol and synthetic B...

2016
Marc Pignitter Natalie Hernler Mathias Zaunschirm Julia Kienesberger Mark Manuel Somoza Klaus Kraemer Veronika Somoza

Fortification programs are considered to be an effective strategy to mitigate vitamin A deficiency in populations at risk. Fortified vegetable oils rich in polyunsaturated fatty acids were shown to be prone to oxidation, leading to limited vitamin A stability. Thus, it was hypothesized that fortified oils consisting of mainly saturated fatty acids might enhance the stability of vitamin A. Mildl...

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