Black rice

About: Black rice is a research topic. Over the lifetime, 2548 publications have been published within this topic receiving 20840 citations. The topic is also known as: purple rice.

Non-enzymolysis rice milk beverage and preparation method thereof

Abstract: The invention provides a non-enzymatic rice milk beverage and a preparation method thereof, wherein, the non-enzymatic rice milk beverage takes crushed rice and black rice as main material, and the method for preparing the non-enzymatic rice milk beverage comprises the steps of screening out impurities, roasting, crushing, non-enzymatic gelatinization, preparation, homogenization, refinement, emulsification, sterilization, packaging, etc. The crushed rice and the black rice are taken as the main material of the non-enzymatic rice milk beverage; the preparation method adopts the dynamic supervoltage microjet technology to refine and emulsify materials; emulsified stabilizing agent is added during the preparation process; and instant ultrahigh-temperature flash evaporation technology is adopted for aromatizing and sterilizing the materials.

Antidiabetic mechanism of ethanol extract of black rice bran on diabetic rats

Abstract: Background: Black rice bran contains bioactive compounds; previous studies have shown the ethanol extract of black rice bran (EEBRB) can decrease levels in diabetic rats. Aims and Objective: To elucidate the mechanism of antidiabetic effect of EEBRB. Materials and Methods: This research was carried out by setting a few parameters for antidiabetic. The effects of inhibition of the enzyme alpha-glucosidase performed with in vitro studies using the extracted enzyme of intestines of mice. A total of 5 mL alpha-glucosidase enzyme was incubated for 5 min with EEBRB 1 mL with a serial concentration in phosphate buffer pH 7.2. Enzyme inhibitory effect was determined by measuring the concentration of formed glucose with Lane–Eynon method. The insulin level and glucose-lowering activity were determined on rats induced by alloxan 150 mg/kg and treated with EEBRB. Treated rats for 28 days were sacrificed and were prepared for histopathological observation of pancreas. Result: EEBRB was able to inhibit the activity of the enzyme a-glucosidase on glucose with IC50 values of 121 ± 12.3 mg%. The EEBRB extract dose of 100 mg/kg was able to decrease blood sugar levels to 151 ± 38.58 mg/dL. The level of insulin in diabetic rats administered by EEBRB dose of 50, 100, and 200 mg/kg was obtained 6.52 ± 5.94, 11.5 ± 3.5, and 15.20 ± 9.5 ng/mL, respectively. Meanwhile, histopathological observations showed an improvement on the pancreatic beta cells. Conclusion: Antidiabetic mechanism of EEBRB is associated with increased insulin levels because of regeneration of pancreatic beta cells in diabetic rats.

Kemajuan Genetik dan Heritabilitas Karakter Agronomi Padi Beras Hitam pada Populasi F2

Abstract: Black rice is a local rice variety with some advantages and weaknesses. The desirable character of black rice is its high anthocyanin content, while the weaknesses are late maturing, tall plant stature and low grain yield. Crosses were made between two parents aimed to recombine the superior traits. The effectiveness and efficiency of selection would be determined by the magnitude of the heritability of traits and the selection progress. This study was aimed to determine the heritability estimates in a broad sense and the genetic advance of agronomic characters of F2 generation, from crosses of local black rice and high yielding variety of white rice. The experiment was conducted in Padasan, Pakembinangun, Pakem, Sleman, Yogyakarta from January to May 2013. The F2 population derived from crosses of black rice x white rice, with the morphological traits of hairless black rice (S) crossed with Situbagendit (G) white rice, Cempo ireng (C) with Situbagendit (G) and Cempo ireng (C) with Inpari 6 (I). The F2 plants population were planted without replication. Genetic parameters estimated were calculated for broad sense heritability and genetic advance from selection. Results showed that the F2 population had high broad sense heritability estimates for all characters observed, including: plant height, flag leaf length, number of productive tillers, panicle length, number of filled grains per panicle, number of empty grains per panicle, maturity and rice color, in the three F2 populations obtained from crosses of S x G, C x G and C x I. Only the plant height of S x G cross had a medium broad sense heritability estimate. The large heritability estimates indicated that the respective character was controlled by genetic factor more than environmental ones. High genetic advance would be obtained in the flag leaf length, number of productive tillers, panicle length, number of filled grains/panicle, number of empty grains/panicle and rice color from S x G, C x G and C x I crosses. Genetic advance of plant height was medium (at S x G and C x I crosses) to high (C x G crosses). The maturity trait had low genetic advance on cross S x G; C x G; and Cx I. The high value of genetic advance of character would suggest that selection on the character’s appearance would be successful.

Health-care coarse grain rice and preparation method thereof

Abstract: The invention discloses health-care coarse grain rice and a preparation method thereof. The health-care coarse grain rice comprises the raw materials of long-shaped rice, polished round-grained rice, glutinous rice, black rice, brown rice, sorghum rice, blueberries, grapes, purslane, seaweed meal, jerusalem artichoke, shaddock peels, lavender, and raspberries. The health-care coarse grain rice has the beneficial effects of good taste, developmental nutrition, functions of invigorating spleen-stomach and replenishing qi, boosting the essence and strengthening the memory, improving hearing and vision, neutralizing the five internal organs, and dredging the four meridians, and a health-care function, and is suitable for consumer groups.