Fermentation Method of Cooking Brown Rice

Brown rice is rich in fiber. It is a good source of manganese, magnesium and Vitamin B6. It is good for heart, helpful in weight management, and is effective in managing other lifestyle diseases like diabetes. Like any other whole grains, brown rice contains anti-nutrients and is rich in Phytic acid (phytates) – about 1.6% dry weight.

Direct boiling or pressure cooking of brown rice may take a longer time to cook and without much reduction in phytate content. The minerals in the brown rice thus cooked will not be bioavailable and is not much useful to the body. Soaking the rice for long hours will not reduce phytate content significantly.

There are two methods which can be employed to eliminate the phytic acid in brown rice:

  1. Soaking and Fermentation
  2. Germinating the brown rice or also known as GBR / GABA Rice

Soaking and Fermentation Method:

Method I:

The below method is a traditional Chinese method taken from a blog Stephen Guyenet blog(1)

  1. Soak brown rice in dechlorinated water for 24 hours at room temperature without changing the water. Reserve 10% of the soaking liquid (should keep for a long time in the fridge). Discard the rest of the soaking liquid; cook the rice in fresh water.
  2. The next time you make brown rice, use the same procedure as above, but add the soaking liquid you reserved from the last batch to the rest of the soaking water.
  3. Repeat the cycle. The process will gradually improve until 96% or more of the phytic acid is degraded at 24 hours.

Method II:

A study(2) compared the different brown rice wet processes (soaking, steeping and fermentation) to see which method is most effective. Fermentation was clearly the most effective process with phytic acid reduction up to 95%. Steeping of intact grains, as a first step of germination, was not significantly effective, only a reduction of 14–28% was obtained. During fermentation, as well as germination, decrease of phytic acid progressed with time. This will not only remove the phytate content from the brown rice significantly but also increases the other nutrients like vitamins B and C.

  1. Soak brown rice overnight and wet grind it into batter consistency. This batter is kept aside for fermentation for 24 hours. The batter can be used to make delicious pancakes.

(Recipe: Fermented Brown Rice Dosa Recipe replace millet with brown rice).

Method III:

Interestingly there exists an traditional Indian method of cooking brown rice (or white rice) which offers immense benefits. The method was given out by Mr. Murulidhar Kontum (3) (Advisor for S-VYASA, Advisor for Vishwa Mangala Gou Gram Yatra, Bengaluru) and is produced below:

“First cook your rice with enough excess water, so that when water remaining after cooking is drained off, any excess starch is removed with it. Instead of throwing this valuable starch solution down the drain, it is used constructively: half is offered to animals and plants, while the other half is inoculated with buttermilk and a pinch of fenugreek seeds – apparently because the strain of yeast that grows on fenugreek seeds is of particular value – and fermented overnight. The following day it is added to the pot in which the day’s rice is being cooked” and the cycle continues…

The above method offers following benefits:

  1. Removal of excess water from the cooking rice (all the ancient Indian texts related to rice cooking recommends this method) results in less calorific rice
  2. Valuable probiotics and yeast is added to the rice
  3. May result in significant reduction in phytates
  4. Rice cooked in above method is very valuable for people suffering from Arthritis and Musculoskeletal disorders

References

  1. http://wholehealthsource.blogspot.in/2009/04/new-way- to-soak- brown-rice.html
  2. Liang, J., Han, B.Z., Nout, M.R. and Hamer, R.J., 2008. Effects of soaking, germination and fermentation on phytic acid, total and in vitro soluble zinc in brown rice. Food Chemistry, 110(4), pp.821-828.
  3. Kontum, M. (2010). A traditional way of rice preparation with particular benefits for Arthritis and musculo-skeletal disorders. Journal of Ayurveda and Integrative Medicine, 1(4), 241–242. http://doi.org/10.4103/0975-9476.74421

Germinated Brown Rice (GBR, GABA Rice), How and Why?

In recent years, India has been called the Diabetes capital of the world. Polished white rice which has a high glycemic index has been blamed among other foods, and Diabetes White-Riceaffected people are eliminating it from their diets. However, shifting to mainly wheat has also been problematic for people with Gluten sensitivity/intolerance. So whole grains like Brown rice, which is rich in fiber is beingrice2 adopted by more people. Brown rice is also a good source of manganese, magnesium and Vitamin B6. It is good for the heart, helpful in weight management, and is effective in managing lifestyle diseases. However, as we have seen in the blog on anti-nutrients, Brown rice is also rich in Phytic acid.

What is GBR?

GBR is simply brown rice which is sprouted (or germinated).

GBRDry

Many don’t know that brown rice can be sprouted. We all know that whole grains/pulses (unpolished or unprocessed) are beneficial for our health due to the higher nutritional value when compared with processed or polished grains. Whole grains and pulses when sprouted has additional health benefits.

Proper preparation of whole grains prior to cooking is an important process to get the maximum health benefit out of them. Here we will discuss the benefits of sprouting brown rice as a preparation prior to cooking to reduce the effects of anti-nutrients.

How to make GBR?

To make GBR, simply soak brown rice for 6 – 8 hours and drain the water. Tie the soaked brown rice in a breathable cotton cloth or place in a sprouter. Brown rice will germinate after 12 – 18 hours.

Nutritional  benefits of GBR

GBR is much better option when compared to brown rice. GBR helps reduce high blood sugar, boosts the immune system, lowers blood pressure, inhibits the development of cancer cells and assists the treatment of anxiety disorders(1).

GBR is a natural functional food because

  1. It is easily digested and absorbed by the body.
  2. Nutrients such as GABA (Gamma-aminobutyric acid), ferulic acid, protein, Vitamin E, dietary fiber, Niacin, magnesium, B Vitamins, total antioxidant activity are increased multifold in GBR when compared to brown rice(2).
  3. GBR contains less calories and sugar when compared to milled rice.

As discussed earlier, during germination, decrease of phytic acid progresses with time. Though there will still be some phytic acid left even after germination, there is phenomenal positive changes in the bioactive compounds which confers host of benefits. Further dried GBR offers an excellent appearance, improved shelf life with more sweetness, excellent taste with better texture. It cooks easier when compared to brown rice.

Importance of GABA

When brown rice is germinated, the most significant increase in the nutrient was observed in GABA levels. GABA, a neurotransmitter is naturally found in human brain and spinal cord which helps in preventing insomnia, depression and headaches. A study(3) showed that intake of GABA suppressed blood pressure and improved sleeplessness. A study(4) done on mice suggested that the antidepressant like effects produced in the mice were due to GABA. Its main benefits are listed below:

  1. Promotes fat loss by the stimulation of the production of human growth hormones
  2. Increases the sleep cycle giving deeper rest
  3. Boosts the immune system
  4. Lowers Blood Pressure
  5. Assists the treatment of anxiety disorders
  6. Possible preventive effects on Alzheimer’s disease or other cerebral related disorders such as amnesia and dementia.

It has long been thought that GABA is unable to cross the blood–brain barrier, but the recent studies suggest otherwise. There is evidence of presence of GABA transporter in blood-brain barrier(5). One more study(6) suggest that the beneficial effects of GABA taken through oral supplements may be through indirect channels like Enteric Nervous System. In addition, there are hundreds of online consumers who claim the beneficial effects of GABA supplements. In any case, GBR is abundant with GABA and other nutrients, and is a natural functional food which offers many benefits.

Ready-to-cook GBR can also be bought from Dhatu Organics

References

  1. Patil, S. B., & Khan, M. K. (2011). Germinated brown rice as a value added rice product: A review. Journal of Food Science and Technology, 48(6), 661–667. http://doi.org/10.1007/s13197-011- 0232-4
  2. Imam, M. U., Azmi, N. H., Bhanger, M. I., Ismail, N., & Ismail, M. (2012). Antidiabetic Properties of Germinated Brown Rice: A Systematic Review. Evidence-Based Complementary and Alternative Medicine : eCAM, 2012, 816501. http://doi.org/10.1155/2012/816501
  3. Okada, T., Sugishita, T., Murakami, T., Murai, H., Saikusa, T., Horino, T., Onoda, A., Kajimoto, O., Takahashi, R. and Takahashi, T., 2000. Effect of the defatted rice germ enriched with GABA for sleeplessness, depression, autonomic disorder by oral administration. JOURNAL-JAPANESE SOCIETY OF FOOD SCIENCE AND TECHNOLOGY, 47(8), pp.596-603.
  4. Mamiya, T., Kise, M., Morikawa, K., Aoto, H., Ukai, M. and Noda, Y., 2007. Effects of pre-germinated brown rice on depression-like behavior in mice. Pharmacology Biochemistry and Behavior, 86(1), pp.62-67.
  5. Takanaga H, Ohtsuki S, Hosoya Ki, Terasaki T. GAT2/BGT-1 as a system responsible for the transport of gamma-aminobutyric acid at the mouse blood-brain barrier. J Cereb Blood Flow Metab. 2001 Oct;21(10):1232-9. PubMed PMID: 11598501.
  6. Boonstra, E., de Kleijn, R., Colzato, L. S., Alkemade, A., Forstmann, B. U., & Nieuwenhuis, S. (2015). Neurotransmitters as food supplements: the effects of GABA on brain and behavior. Frontiers in Psychology, 6, 1520. http://doi.org/10.3389/fpsyg.2015.01520