print

Extraction of b-glucans from brown rice and rice bran

---

?-glucans are used in many product for multi purposes, such as supplement, therapeutic, cosmetics and pharmaceutical product. Common source of ?-glucans are oat, barley, bacteria and yeast (Healthguy, Beta glucan, 2011). These sources are not readily available in Indonesia, therefore this research aims to develop extraction process of ?-glucan from rice based material, namely brown rice and rice bran that were produced in large amount in Indonesia (Ebrahimi, 2007). The method develop were based on ?-glucan extraction process for grain based materials (Wood et al.,1978). Modifications were made by changing the extraction pH into 8 and 10, and temperature of 40 oC and 60 oC. The results shows that the yield of brown rice extraction at 40 oC were 4.851 (mg)/ sample(g) (at pH 8) and 4.768 mg/ sample (g) at pH 10, and at 60 oC were 5.624 (mg)/ sample(g) and 6.183 (mg)/ sample(g) at pH 8 and 10 respectively. From the evaluation can be concluded that extraction temperature gives significant impact, while pH is not. ?-glucan activity represented by viscosity increase were evaluated and to achive viscosity of 1.157 cP, less amount of ?-glucan is required from brown rice (0.895 g/L) compare to rice bran (1.176 g/L). This shows the possibility that brown rice ?-glucan is having higher activity, however simple cost comparison shows that rice bran is more economic.

---

Availability

B01109

(wh)

Available

Detail Information

Series Title

-

Call Number

1109

Publisher

: Swiss German University., 2012

Collation

-

Language

English

ISBN/ISSN

-

Classification

NONE

Content Type

-

Media Type

-

Carrier Type

-

Edition

-

Subject(s)

PE

Specific Detail Info

-

Statement of Responsibility

-

Other version/related

File Attachment

Comments

---

You must be logged in to post a comment