Main source of Oryzanol

What is Rice Bran Oil

 

Rice Bran Oil is ontained from the Brown layer of Rice, removed during the Rice Milling Process as a by-product. This aleurone layer of Brown Rice contains around 15-20 % of  oil.This oil internationally is recognised as a health oil and in Japan called Heart Oil. India is world’s largest producer of this  healthy Rice Bran Oil “Ricela Health Foods Limited” being the World Leader”and its brand Ricela is the richest source of Oryzanol among the brands available in India.Rice bran oil offers several unique properties that make it very interesting as a specialty oil in niche markets.This oil is the only cooking medium which has an ideal SFA/MUFA/PUFA and Essential Fatty Acid ratio which is closer to the recommended levels of WHO.A number of scientific studies have confirmed that using Rice Bran Oil as a cooking medium could significantly reduce the bad cholesterol without adversely affecting the good cholesterol due to presence of a unique component in this oil known as “Oryzanol” which is not found in any other vegetable oil.

 


   

General Process of Rice Bran Oil

 


 

Physical Vs. Chemical Process Chart

 

Physical Refining/

Steam Refining

Chemical Refining/

Caustic Refining

  • Degumming( Removing of Phosphotides) through Enzymes
  • Degumming with the help phosphoric Acid
  • Bleaching (Color removal through Activated Bleaching Earth)
  • Neutralisation (Caustic Based for removal of Free Fatty Acids)
  • Dewaxing(Filter Pressing)
  • Bleaching
  • Steam Deacidification (Removal of Free Fatty Acid)
  • Dewaxing
  • Winterisation
  • Deodourisation
  • Bleaching

 

  • Deodourisation

 

 

Why only physically refined RBO?

The oil is physical refinined as to preserve the nutrients which would otherwise be lost due to the use of harsh chemicals like caustic. Following are the drawbacks of chemically refined RBO

Drawbacks of Chemical Refining Process

»
High Polltion
» Uneconomical for refining high FFA oils such as RBO
»Use of harsh chemicals like Phosphoric Acid for Degumming and Caustic Acid for Deacidification results in Loss of Nutrients such as “Oryzanol”

 

That’s why Physically Refined Rice Bran Oil contains 5-6 Times more Oryzanol in it than the Chemically( Caustic) refined Oil.

·         How to check whether RBO is Physically Refined or Chemically

 

Physically Refined RBO is generally Golden( dark yellow) in Color as it has been refined through steam Distillation process which preserves all the essential nutrients of this healthy oil, whereas

Chemically Refined RBO is generally lighter in Color (stripped off from nutrients due to use of Harmful chemicals).

Also only Refiners using physical refining Technique can mention on their packaging packs, that the oil is Physically Refined.

 


Why only Rice Bran Oil

Rice bran oil is a naturally occurring source of Oryzanol,a nutrient known to have following properties-Anti-oxidant, anti-carcinogenic, anti-ulcer, anti-stress, lipotrophic effects, hypothalamic effects, endocrinological effects, athletic benefits,treats nerve imbalance, disorders of menopause and benefits to the  skin similar to that of Vitamin E

·         Rice Bran Oil has the best balance of saturated, monounsaturated and polyunsaturated fats as recommended by such organizations as the American Heart Association and the World Health Organization. It's the oil of choice for improving serum cholesterol levels and preventing cardiovascular diseases.

·         It has Tocopherol (Vitamin E), an antioxidant which reduces the incidence of stroke, reduces coronary blockage and helps in balancing the nervous system. Tocotrienols inhibit platelet aggregation and growth of human breast cancer cell.It has anti thrombotic and anti cancer properties. 

·         It has squalene, an antioxidant present in Rice Bran which improves skin tone and delays wrinkle formation. It also acts as an anti dandruff and anti itching agent.

·         It has 4 hydroxy 3 methoxycinnamic acid which stimulates hormonal secretion and rejuvenates health.

·         The lipoic acid in Rice Bran stabilises blood sugar levels and reduces the damage in body caused by excess sugar.

·         It is a potent mutagen and even afeter heating to higher temperatures of 180^ c, does not exhibit mutagenic activity.

·         Rice bran supplements could lower blood pressure.

·         It contains IP6, a chelating and antioxidant agent has beneficial bioactive functions such as the prevention of urinary calculi, the improvement of immune system and anti cancer action.

·         The viscosity of this oil is very light and the flavor delicate. Foods cooked with Rice Bran Oil absorb up to 15-20% less oil! Less oil absorbed results in reduced calories, better, lighter tasting food and enhanced flavor and palatability. Less oil absorbed also makes it more economical.

·         Rice Bran Oil is hypoallergenic. For those who have an intolerance to other cooking oils this is an excellent alternative.

·         Rice bran oil has a very high smoke (burn) point, making it perfect for deep frying, pan or stir frying and is a premium choice for the replacement of hydrogenated oil containing trans fat as this has Zero Trans fat.

·         Rice bran oil creates less polymers than other oils meaning better flavor and easier clean-up.

 

 


 

·         Expert Views on active use of RBO

 

  • In cereal-based diets, the use of any single oil (Except Rice Bran Oil) may not furnish the optimal intake of all fatty acids and their ratios

Dr.Ghafoorunissa, Deputy Director, National Instituteof Nutrition, Hyderabad.

  • Health aspect of rice bran oil is not highlighted as much as it should have been done this is where the market is in terms of the total awareness, be it as a hypocholesterolenic, antiviral, antioxidant and anticancer effect, or even a scavenging effect of carcinogens. All these need to be highlighted.

Dr. V. Parkash, Director, Central Food Technological Research Institute, Mysore

  • Rice bran oil, obtained from rice bran a by product of rice milling, is a unique edible oil with nutritionally desirable attributes compared to other edible oils, its fatty acids composition is nearer to that recommended by nutritionists ideal for edible purpose. It has cholesterol lowering property attributed to oryzanol, a minor constituent, present in the oil. It contains minute quantities of nutritionally valuable constituents, such as tocopherols, sterols squalene etc., which are important for promotion and maintenance of good health.

Dr.A.B.Afzalpurkar, Dy. Director, Indian Institute of Chemical Technology, Hyderabad

  • Rice bran oil enjoy the status of a health food from a cardiovascular view point and routine use of rice bran oil can be recommended as a sole cooking medium.

Dr.Parveen Chandra, MD, DM, Consultant Cardiologist, Escort Heart Institute & Research Centre, New Delhi

  • Rice Bran Oil will be the cooking medium of first choice and preference to bypass, bypass the dietry way.

Dr.Shashank R. Joshi, MD, DM, FICP, FICN, Endocrinologist, Lilavati Hospital, Mumbai