Rice bran oil - AbsoluteAstronomy.com

Rice bran oil is the oil extracted from the germ

Cereal germ

The germ of a cereal is the reproductive part that germinates to grow into a plant; it is the embryo of the seed. Along with bran, germ is often a by-product of the milling that produces refined grain products. Cereal grains and their components, such as wheat germ, rice bran, and maize may be used...

and inner husk of rice

Rice

Rice is the seed of the monocot plants Oryza sativa or Oryza glaberrima . As a cereal grain, it is the most important staple food for a large part of the world's human population, especially in East Asia, Southeast Asia, South Asia, the Middle East, and the West Indies...

. It is notable for its very high smoke point

Smoke point

The smoke point generally refers to the temperature at which a cooking fat or oil begins to break down to glycerol and free fatty acids, and produce bluish smoke. The glycerol is then further broken down to acrolein which is a component of the smoke. It is the presence of the acrolein that causes...

of 490 °F (254.4 °C) and its mild flavor, making it suitable for high-temperature cooking methods such as stir frying

Stir frying

Stir frying is an umbrella term used to describe two Chinese cooking techniques for preparing food in a wok: chǎo and bào . The term stir-fry was introduced into the English language by Buwei Yang Chao, in her book How to Cook and Eat in Chinese, to describe the chǎo technique...

and deep frying

Deep frying

Deep frying is a cooking method in which food is submerged in hot oil or fat. This is normally performed with a deep fryer or chip pan; industrially, a pressure fryer or vacuum fryer may be used....

. It is popular as a cooking oil

Cooking oil

Cooking oil is purified fat of plant origin, which is usually liquid at room temperature ....

in several Asian countries, including Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

and China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

.

Consumed at room temperature or cooler, rice bran oil is rich in vitamin E

Vitamin E

Vitamin E is used to refer to a group of fat-soluble compounds that include both tocopherols and tocotrienols. There are many different forms of vitamin E, of which γ-tocopherol is the most common in the North American diet. γ-Tocopherol can be found in corn oil, soybean oil, margarine and dressings...

, gamma-oryzanol (an antioxidant

Antioxidant

An antioxidant is a molecule capable of inhibiting the oxidation of other molecules. Oxidation is a chemical reaction that transfers electrons or hydrogen from a substance to an oxidizing agent. Oxidation reactions can produce free radicals. In turn, these radicals can start chain reactions. When...

that is used for many alternative herbal therapies, and may help prevent heart attacks), and phytosterols (compounds believed to help lower cholesterol absorption), which may provide associated health benefits.

Rice Bran wax, obtained from Rice Bran Oil is used as a substitute of Carnauba wax, used in shoe creams and shoe polishes.

Composition

Rice bran oil contains a range of fats, with 47% of its fats monounsaturated, 33% polyunsaturated, and 20% saturated

Saturated fat

Saturated fat is fat that consists of triglycerides containing only saturated fatty acids. Saturated fatty acids have no double bonds between the individual carbon atoms of the fatty acid chain. That is, the chain of carbon atoms is fully "saturated" with hydrogen atoms...

. The fatty acid

Fatty acid

In chemistry, especially biochemistry, a fatty acid is a carboxylic acid with a long unbranched aliphatic tail , which is either saturated or unsaturated. Most naturally occurring fatty acids have a chain of an even number of carbon atoms, from 4 to 28. Fatty acids are usually derived from...

composition of rice bran oil is:
! Fatty acid !! Percentage
|-
| Palmitic

Palmitic acid

Palmitic acid, or hexadecanoic acid in IUPAC nomenclature, is one of the most common saturated fatty acids found in animals and plants. Its molecular formula is CH314CO2H. As its name indicates, it is a major component of the oil from palm trees . Palmitate is a term for the salts and esters of...

15.0% \|- \| Stearic Stearic acid Stearic acid is the saturated fatty acid with an 18 carbon chain and has the IUPAC name octadecanoic acid. It is a waxy solid, and its chemical formula is CH316CO2H. Its name comes from the Greek word στέαρ "stéatos", which means tallow. The salts and esters of stearic acid are called stearates...	1.9% \|- \| Oleic Oleic acid Oleic acid is a monounsaturated omega-9 fatty acid found in various animal and vegetable fats. It has the formula CH37CH=CH7COOH. It is an odorless, colourless oil, although commercial samples may be yellowish. The trans isomer of oleic acid is called elaidic acid...	42.5% \|- \| Linoleic Linoleic acid Linoleic acid is an unsaturated n-6 fatty acid. It is a colorless liquid at room temperature. In physiological literature, it has a lipid number of 18:2...	39.1% \|- \| Linolenic Alpha-linolenic acid α-Linolenic acid is an organic compound found in many common vegetable oils. In terms of its structure, it is named all-cis-9,12,15-octadecatrienoic acid. In physiological literature, it is given the name 18:3 ....	1.1% \|- \| Arachidic Arachidic acid Arachidic acid, also called eicosanoic acid, is the saturated fatty acid with a 20 carbon chain. It is as a minor constituent of peanut oil and corn oil . Its name derives from the Latin arachis — peanut...	0.5% \|- \| Behenic Behenic acid Behenic acid is a normal carboxylic acid, the saturated fatty acid with formula C21H43COOH. In appearance, it consists of white to cream color crystals or powder with a melting point of 80°C and boiling point of 306°C.-Sources:...	0.2%

Cholesterol Reduction

Mohammad Minhajuddin published the results of animal studies in the May 2005 "Journal of Food and Chemical Toxicology." They showed a 42-percent decrease in total cholesterol with a 62-percent drop in low-density lipoproteins, or LDL cholesterol, when researchers supplemented test subjects' diets with fractionated vitamin E obtained from rice bran oil. M. Most also published results of a small human study with 26 participants in the January 2005 "American Journal of Clinical Nutrition." The test subjects saw a 7-percent decrease in LDL cholesterol with no change in total cholesterol during a 10-week study.)

Scientific studies have shown that the antioxidant stability in rice bran oil remains almost constant even when heated at frying temperatures.
The study of thermal degradation and antioxidant stability in the oil is carried out by heating the oil to the
frying temperature up to 250°C for 0.5, 1, 1.5, 2hrs. The density of rice bran oil is found to be constant
throughout the time of heating illustrates there is no molecular changes due to antioxidant activity in the
oil.The oxidative stability of rice bran oil was equivalent to or better than soybean, corn canola, cottonseed, and safflower oil in a
model system that simulated deep frying conditions.)

Rice bran oil for Menopause

Rice bran oil (aka Gamma Oryzanol) was shown, in Japanese research, to be effective in relieving hot flashes and other symptoms of menopause. Researchers polled women suffering from "climactic disturbance" (commonly known as "hot flashes") and found that 90% of the women found some form of relief after taking a rice bran oil supplement for 4–6 weeks.

Rice bran extract in its natural form (a powder) is not easily absorbed by the human body, so it must first be emulsified in to an oil for proper absorption.

Composition

Cholesterol Reduction

Rice bran oil for Menopause

See also