Brown Rice Varieties Research Articles

초다수성벼 밀양356호 발아현미의 발아일수에 따른 이화학적 특성 및 유리아미노산 함량

We investigated the germination rate, color values, physicochemical properties, antioxidant capacity, and amino acid content of germinated brown rice varieties (milyang356, nampyeong, and dasan), and their statistical correlation were analyzed. Milyang356 rice was characterized by the highest germination percentage and total color difference value (3.89) at 24 h. In all varieties, the amylose and crude protein content increased on the 1st day of germination but decreased over time (p<0.05). The paste viscosity value significantly decreased over time in all varieties. DPPH and ABTS scavenging activities decreased or increase over time depending on the variety. By contrast, the total phenol and flavonoid content increased with time in all varieties. Furthermore, the total free amino acid and GABA content increased gradually with the germination time. The essential amino acid content was highest on day 3 of germination in milyang356 (276.9 mg/100 g) and dasan varieties (344.1 mg/100 g). The total phenol content showed a negative correlation with L* value (r=−0.778) and a strong positive correlation with ΔE (r=0.927). Considering its paste viscosity, and high essential amino acid and GABA content, we conclude that germinated brown rice milyang356 is suitable as a functional medical material, such as a health supplement.

Substitution of local Indonesian varieties of brown rice on anthropometry and blood glucose level improvement in type 2 DM patients: a pilot project.

Background: Diabetes mellitus (DM) is a metabolic disorder whose prevalence increases globally. Medical nutrition therapy (MNT) is one of the DM management pillars to control blood glucose. Local Indonesian brown rice is proven to contain high fiber and magnesium levels thus could improve obesity, fasting blood glucose, and HbA1c. This study aims to prove the benefits of brown rice on anthropometric parameters and blood glucose control.Design and methods: Respondents were overweight women older than 40 years with type 2 diabetes who were given three main meals and three snacks six days a week for 12 weeks. Anthropometric and blood glucose control data were collected before and after the intervention. Diet and intake data before the intervention were obtained through a semi quantitate food frequency questionnaire. Intake data during the intervention were recorded using the 24-hour food record and analyzed using modified NutriSurvey 2007 software.Results: Brown rice intervention significantly reduced body weight, BMI, body fat percentage, and abdominal circumference (p<0.05), also in fasting blood glucose (FBG), 2-h postprandial blood glucose (PBG), and HbA1c (p<0.05). From the Pearson’s test results, an increase in fiber intake correlated with a decrease in BMI and abdominal circumference (p=0.03; r = -0.511 and p=0.006; r = -0.619, respectively). Meanwhile, magnesium intake and changes in BMI showed a negative correlation.Conclusions: The substitution of brown rice as a staple food for 12 weeks improves anthropometric parameters and blood glucose control in respondents with type 2 diabetes. Significance for public health Diet management is one important point in blood glucose control in diabetes mellitus patients. Ignoring the eating habits of patients given interventions makes diet difficult to be implemented. The tradition of consuming rice as a staple food is a dietary pattern for Indonesians. Selecting brown rice as a staple food in patients with diabetes mellitus has been proven to improve blood glucose control. Clinical trials in this study can be used as a reference for public education regarding the recommended servings of brown rice in daily servings as blood glucose control.

Marker-Assisted Backcrossing (MABc) to Improve Eating Quality with Thin Seed Coat and Aleurone Layer of Non-Glutinous Japonica Variety in Rice.

Brown rice is composed of rice bran, pericarp, seed coat, and aleurone layers, and the rice bran layer contains a large number of substances useful for the human body, such as dietary fiber, α-tocopherol, α-tocotrienol, and vitamins. However, more than 90% of these substances are removed when polished, and white rice has the disadvantage of losing food-related ingredients, such as umami-related amino acids, when compared to the unpolished group. In this study, we tried to develop new breeding lines with a thinner seed coat and aleurone layer to provide high eating quality with softer chewing characteristics and processability in rice grain. We detected an SNP for foreground selection for the backcross population by comparing genome sequences between Samgwang and Seolgaeng and developed high eating quality brown rice breeding lines by applying marker-assisted backcrossing (MABC) breeding programs to backcross populations between Samgwang and Seolgaeng using KASP markers. SNP markers for foreground selection were identified to improve eating and processability through SNP mapping of Samgwang and Seolgaeng with SSIIa as a target gene in this study. Line selection according to genotype of KASP markers was successful in BC1F1 and BC2F1 generations, with the recurrent parent genome recovery ratio ranging from 91.22% to 98.65%. In BC2F1 seeds of the selected lines, thickness of the aleurone layer was found to range from 13.82 to 21.67 μm, which is much thinner than the 30.91 μm of the wild type, suggesting that selection by MABc could be used as an additional breeding material for the development of highly processed rice varieties. These lines will be useful to develop new brown rice varieties with softer chewing characteristics and processability in rice grain.

Effect of Gamma Irradiation on Shelf Life, Nutritional, and Glycemic Properties of Three Indian Brown Rice Varieties

Effect of Gamma Irradiation on Shelf Life, Nutritional, and Glycemic Properties of Three Indian Brown Rice Varieties

Germination of five Indonesian brown rice: evaluation of antioxidant, bioactive compounds, fatty acids and pasting properties

Germination can alter the physicochemical, nutritional, and nutraceutical value of brown rice. This study aimed to evaluate some characteristic changes from five Indonesian brown rice varieties during germination. The germination was carried out through a complete soaking method for up to 120 h, and the samples were taken and analyzed every 24 h. The results showed that germination increased GABA (γ-aminobutyric acid) content in brown rice. The highest level of GABA, up to 126.55 mg/100 g, obtained in rice var. Inpari 43, after 120 h. Germination also affected the changes in phenolic content, antioxidant capacity, and γ-oryzanol, while fatty acid compositions showed no changes. The pasting properties changed significantly after germination, especially in peak viscosity, final viscosity, breakdown, and setback. In conclusion, the changes in brown rice characteristics during germination, especially for increased GABA content and shifting of pasting properties, are valuable information for developing functional rice-based food products.

Effect of germination on yield, physico-chemical properties, nutritional composition and GABA content in germinated brown rice

Germinated brown rice (GBR) is an emerging health food that has received attention due to its nutritional composition, especially Gamma Amino Butyric Acid (GABA). The objective of this research was to germinate two brown rice varieties MTU 1010 and KNM 118 at various germination hours (0, 12, 24, 36, 48, 72 hours) to determine the best yield and correlate with the nutritional composition and GABA content. Brown rice soaked in water for 12 hours at 28 ± 2ºC followed by 24 to 36 hours germination was found to have optimum yield (85%) with good nutritional and GABA content. Protein, fat, crude fiber, carbohydrate content and energy content among all samples were highest at 24 hours and 36 hours of germination. Pearson correlation coefficient performed between yield, germination hours and nutritional parameters of both varieties, indicated a positive correlation between germination hours and GABA content in both varieties.

Concentrations of essential and toxic elements and health risk assessment in brown rice from Qatari market

Twenty-two brown rice varieties available in the Qatari market were analyzed for essential and toxic elements by ICP-MS. Found concentrations (µg/kg) were: As: 171 ± 78 (62–343), Cd: 42 ± 60 (4–253), Cr: 515 ± 69 (401–639), Pb: 6 ± 7 (<MDL-26), and U: 0.1 ± 0.5 (<MDL-2). One third of the samples contained high levels of arsenic. Significant differences (p < 0.008) in concentrations were observed for many elements based on both the grains’ country of origin and size. Calculated carcinogenic risk according to published speciation data of inorganic arsenic and chromium(VI) available in the literature for rice is > 1 in million, may possibly be > 1 in 10,000 based on conservatively high brown rice consumption rates of 200 g/d or 400 g/d in Qatar. These elevated risks may be applicable to specific population subgroups with diabetic conditions who consume only brown rice. Non-cancer risks are mainly derived from Mn, V, Se, and Cd with a hazard index > 1 from some brown rice samples.

Glucose Lowering Effect of Brown Pigmented Rice (oryza sativa l) in Diet-Induced Hyperglycemic Sprague Dawley Rats

The study investigated the dietary fiber and glycemic index of the three varieties of brown pigmented rice, namely, <em>Inpari 24</em>, <em>Mawar</em>, and <em>Segreng,</em> and the hypoglycemic effect of the rice variety with the highest dietary fiber and low glycemic index in hyperglycemic Sprague Dawley rats. Study phases included: 1) chemical analysis such as dietary fiber and amylose content, and proximate analysis of brown pigmented rice, 2) intervention phase 1: determination of effective dose of brown pigmented rice; and 3) intervention phase 2: <em>in vivo</em> evaluation of hypoglycemic effects of brown pigmented rice. <em>Segreng</em> variety contained the highest dietary fiber and lowest glycemic index. At the end of the intervention period, the effective dose to lower the blood glucose level was 75% cooked brown pigmented rice and 25 % commercial rodent feed combination with a reduction of 54.57 %. And its reduction was comparable to the blood glucose level of rats given glibenclamide treatment (58.24 %). A significant positive correlation for blood glucose with calorie, carbohydrate, and fat was also observed. Therefore, the consumption of cooked brown pigmented rice can lower blood glucose levels in hyperglycemic Sprague Dawley rats. Furthermore, the glucose-lowering could be due to the dietary fiber and amylose content of brown pigmented rice. Further study is recommended using human subjects, and it may also be replicated using other grains like corn, <em>adlai</em>, sorghum, and root crops.

The Physical and Chemical Characteristic of 3 Varietas of Germination Brown Rice (Mentik susu, Ciherang, and Pandan wangi)

Brown rice has physical and sensory characteristics that are less favorable despite its high content of nutrition and phytochemical. The germination process is one way to improve and increase the acceptance of brown rice. The objective research was to determine germination time and varieties of brown rice on the physical and chemical characteristics of germinated brown rice. The research was conducted in RAL with 2 factors, germination time (24, 48, and 72 hours) and rice varieties (Mentik susu, Ciherang, and Pandan wangi). The data obtained were processed with analysis of variance to determine the effect of treatment on the parameters tested. If the effect is significant, then to determine the difference between treatments, a Tukey test is performed. Germination time of 24, 48, and 72 hours affected the color, germination, weight, dimensions of lenght, width, and thickness, bulk density, hydration capacity and swelling of germinated brown rice var. Mentik susu, Ciherang, and Pandan wangi. Germination time of 24, 48, 72 hours affected the chemical composition of BCG var. Mentik susu, Ciherang, and Pandan wangi. Based on observations of the physical and chemical characteristics of BCG var. Mentik susu, Ciherang, and Pandan wangi, germination time of 48 hours is recommended to do the germination with germination time of 48 hours compared to germination time of 24 and 72 hours.

Consumer Acceptance of Brown and White Rice Varieties.

Rice is consumed as a staple food by more than half of the world’s population. Due to a higher fibre and micronutrient content, brown rice is more nutritious than white rice, but the consumption of brown rice is significantly lower than that of white rice, primarily due to sensory attributes. Therefore, the present research aimed to identify the sensory attributes which drive liking of Australian-grown brown and white rice varieties. Participants (n = 139) tasted and scored (9-point hedonic scale) their liking (i.e., overall liking, aroma, colour and texture) of brown and white rice types of Jasmine (Kyeema), Low GI (Doongara), and Medium grain rice (Amaroo). In addition, participants scored aroma, colour, hardness, fluffiness, stickiness, and chewiness, on Just About Right Scales. A within-subjects crossover design with randomised order (William’s Latin Square design) was used with six repeated samples for liking and Just About Right scales. Penalty analyses were applied to determine the relative influence of perception of sensory attributes on consumer liking of the rice varieties. Across all varieties, white rice was liked more than brown rice due to the texture and colour, and Jasmine rice was preferred over Low GI and Medium Grain. Rice texture (hardness and chewiness) was the most important sensory attribute among all rice varieties and aroma was important for driving of liking between white rice varieties.

A comparative evaluation of in vitro antihyperglycemic potential of Bamboo seed rice (Bambusa arundinacea) and Garudan samba (Oryza sativa): An integrated metabolomics, enzymatic and molecular docking approach

The study reports the in vitro antihyperglycemic potential of Bamboo seed rice/BSR, a brown rice from Bambusa arundinacea species in comparison to a traditional Indian brown rice - Garudan samba/GS from Oryza sativa species using an integrated approach. Untargeted phenolic profiling using Q-TOF-LC-MS/MS confirmed sixty-three phenolic metabolites in BSR and thirty-nine in GS. The most abundant phenolics in BSR and GS were gallic acid, 4-hydroxybenzaldehyde, caffeic acid 4-O-glucoside and p-coumaric acid. Additionally, eriocitrin was abundant in BSR and cirsimaritin in GS. Predicted glycemic index determined using an in vitro starch digestibility technique indicated BSR to be a low GI variety and GS a moderate GI variety. In terms of antihyperglycemic enzyme inhibitory potential, BSR exhibited better α-amylase inhibition, whereas GS exhibited greater inhibition of dipeptidyl peptidase IV. This was further confirmed using molecular docking techniques which revealed that eriocitrin and cirsimaritin were strong inhibitors of α-amylase and DPP IV enzymes. The study thus revealed brown rice varieties from both Bambusa sp. and Oryza sp. as healthier options to white rice in the dietary management of diabetes and as good sources of several bioactive phenolic compounds.

Physicochemical and cooking characteristics of pigmented traditional rice varieties

Traditionally, every variety of rice has had agricultural and food significance. The particularities of the varieties do not end with the paddy plants, duration, seasonality, etc. The grains also have their unique features. They have specific nutritive, cooking and eating qualities. To study the physicochemical and cooking characteristics of traditional rice popular brown rice varieties were collected from Pudukkottai, Sivagangai (Karaikudi) and Perambalur districts of Tamil Nadu. From the collected samples, five rice varieties namely Kaatuyaanam, Karuppukavuni, Karunguruvai, Mapillaisamba and Kuruvaikalanchiyam were selected for the study. Certain unique features of the rice were characterized out by the physical, thermal and cooking characteristics of brown rice varieties. Physical characteristics such as test weight, kernel length, and breadth and L/B ratio, seed grade were assessed. Thermal characteristics such as water uptake, volume expansion ratio and alkali spreading value were also assessed. The traditional rice varieties were found to exhibit good Phyico-chemical and thermal characteristics revealing their high grain quality.

Development of Corcyra cephalonica (Stainton) on six varieties of brown and milled rice

Development of Corcyra cephalonica (Stainton) on six varieties of brown and milled rice

The Effect of Dryer Type on Consumer Acceptance of Brown and Black Rice Sembada Varieties of Noodles

Noodles are foods that are liked by children, teenagers, adults, and the elderly. Noodles have become popular among the people because of their low price and simple processing and serving. Noodle processing is still made from wheat flour; people still consume more white rice, while the variety of processing noodles from brown rice flour has not been done much. The purpose of this study was to determine the effect of drying methods (cabinet dryer and sunlight) on consumer acceptance of Sembada varieties of brown rice and black rice noodles. The research method used was a completely randomized design with 3 replications. The object of research is noodles with brown rice flour substitution of 25%, 50%, 75%, and 100%. This research was conducted in October 2019 with a total of 30 panelists. Organoleptic test using hedonic method. The results of the organoleptic test showed that the substitution of 100% brown rice flour by drying using a cabinet dryer gave a better effect on the quality of the resulting color, which is more attractive, has a distinctive aroma and taste. brown rice flour the rice flour used, and the resulting consistency are very friendly to the panelists.

Effect of rice variety and location on nutritional composition, physicochemical, cooking and functional properties of newly released upland rice varieties in Ethiopia

The aim of this study was to characterize the newly released different upland rice varieties grown at two representative locations in Ethiopia. This experiment was conducted in factorial design arranged in completely randomized design with three replications. The factors considered were variety (Hidassie, Kokit, NERICA-3, NERICA-4, NERICA-12 and NERICA-13), and growing location (Fogera and Pawe). Collected samples were processed to brown rice and analyzed for selective physical, proximate, cooking, functional, mineral, and color properties. The results showed that the growing location and variety had a significant effect (P ≤ 0.05) on rice quality attributes. The variety Kokit was the most consistent in terms of hectoliter weight, alkali-spreading value, grain weight, amylose, and grain thickness. The mean minimum cooking time of the varieties had ranged from 6.67 to 28.0 min. The gelatinization temperature of upland brown rice varieties varied from 59 to 78.33°C. NERICA-4 grown at Pawe had significantly higher gelatinization temperature (78.33°C) compared to others. The protein content was higher in all the studied varieties grown at Pawe (9.82 to 10.29%) than the varieties grown at Fogera (6.34 to 8.44%). The maximum values for manganese (23.52 mg/kg), magnesium (1091.31 mg/kg) and zinc (25.95 mg/kg) were found in Hidassie grown at Fogera. Similarly, the highest Fe content (70.6 mg/kg) was found in NERICA-3 at Pawe. The current findings will be highly useful for the researchers and processers in the field of rice research and development.

High-performance liquid chromatographic (HPLC) analysis of a crossbred brown rice variety (UKMRC-9) shows high GABA content

The neurotransmitter γ-aminobutyric acid (GABA) is a functional food ingredient of growing importance in the preparation of GABA-enriched germinated brown rice (GBR). Quantification of GABA levels during germination in a locally developed high yielding red rice variety (UKMRC-9) was carried out via high-performance liquid chromatography (HPLC) analysis using pre-column chemical derivatisation with 2-hydroxynaphthaldehyde (HN) using a UV detection system. Factors that influence rice germination such as soaking time and temperature were also studied. The results of this study showed that the UKMRC-9 rice variety soaked in water for 6 hours at 35 °C yielded the highest value for both germination percentage (95.4±1.2%) and GABA content (411 μg g-1). This suggests that long soaking times of 1-4 days can be substituted by short soaking times to produce high GABA levels in germinated brown rice.

The Identification of Characteristic Macro- and Micronutrients and the Bioactive Components of Indonesian Local Brown Rice as a Functional Feed in Obesity Nutrition Therapy

Background: Public interest and awareness of the use of functional food as an obesity nutrition therapy are increasing. Objective: This study aims to analyze the content of energy, macronutrients, minerals (magnesium, manganese, and potassium), and bioactive components (fiber, β-glucan) in Indonesian varieties of brown rice compared to white rice, to provide precise information on the nutritional content of brown rice as a functional food in obesity nutrition therapy. Methods: This research took the form of a laboratory analysis to identify the content of energy, macronutrients, fiber, β-glucan, magnesium, manganese, and potassium in brown rice varieties Sinta Nur. The energy content of rice was analyzed using bomb calorimetry; macronutrients were analyzed by spectrophotometry, gravimetric extraction, and acid-base titration; dietary fiber, and β-glucan were analyzed by enzymatic methods; and mineral contents were analyzed by spectrophotometry and atomic absorption spectrophotometry. Results: The results demonstrated that the energy and macronutrient content of brown rice are higher than white rice. However, brown rice also has dietary fiber and β-glucan contents that are 5 times higher than white rice. For the macronutrient, in brief, magnesium content was 7.7 times higher, potassium was 5.7 times higher, and manganese was 1.59 times higher within the brown rice. Cooked rice is known for lower nutritional value, but the nutritional value of Indonesian brown rice is still higher than white rice. Conclusion: The results of this study indicate that brown rice has nutrient content and bioactive components that allegedly contribute to higher obesity intervention than white rice.

EFFECT OF PARBOILING PROCESS ON MILLING QUALITY, PHYSICAL AND CHEMICAL PROPERTIES OF TWO RICE VARIETIES

The present study was carried out to investigate the effect of parboiling process on physicochemical, nutritional properties, Milling quality and organoleptically of brown and white rice. The obtained results revealed that, physical properties of brown and white rice varied from one variety to another. Giza 182 rice variety was significantly the longest length among Giza 179 rice variety. In addition, parboiling process had no effect on the length and width of either brown or the white rice at P ≤ 0.05.The paddy rice of raw (Giza 179) had the highest percentage of broken grains and the lowest percentages of head rice and Brown rice as compared with (Giza 182) variety, where parboiling process led to decrease the percentage of broken rice from 32.40 to 4.28% for Giza 179 and from 16.50 to 5.50 for Giza 182.In addition, parboiling process help to increase the head rice and white rice percentages. Water uptake, sedimentation value of white rice were significantly higher than that of brown rice. white rice variety of Giza 179 had the lowest cooking time among all of the tested rice samples (17 min.). water uptake and sedimentation values decreased as a function of parboiling process but cooking time increased for all rice samples. Gel consistency (GC) varied significantly among varieties in both brown and white rice. Alkali spreading value in brown rice varieties showed lower values in comparing with white rice varieties. white rice variety of Giza 182 had the highest Alkali spreading value, Elongation and Amylose content among the other varieties. Moreover, it were decreased upon subjecting rice to parboiling process. Brown rice of two rice varieties had higher contents of crude protein, ether extract and ash but lower content of total carbohydrates than those of white rice. Parboiling process lowered the percentage of the crude protein and ether extract in both brown and white rice .whereas, it increased the ash and minerals content in white rice samples. The cooked white rice of Giza 182 variety had the highest mean scores for the palatability characteristics among all of the tested rice samples. In addition, parboiling process helped to decrease the mean score for the palatability characteristics but the values were still acceptable by the panelists.

Phytochemical, fatty acid and proximal composition of six selected Indonesian brown rice varieties

ABSTRACT Within this study, phytochemical, fatty acid and proximal composition of six Indonesian brown rice cultivars (Inpari 42, Inpari 43, Situ Bagendit, IPB3 S, Inpari 17, and Inpara 3) were reported. The range of moisture, ash, crude fat, crude protein, and total carbohydrates content of six varieties of brown rice were 11–12%, 1.3–1.4%, 2–3%, 7–11%, and 84–89%, respectively. Fatty acid composition of brown rices was dominated by unsaturated fatty acids. The phenolic contents and IC50 of all cultivars varied from 47 to 70 mg GAE/100 g and 28–47 mg/mL, respectively. Inpari 17 had the highest phenolic content as well as antioxidant activity, whereas IPB 3 S variety exhibited the lowest in both γ-oryzanol content of brown rices ranged from 37 to 55 mg/100 g. The highest content of γ-oryzanol was observed in Inpara 3. In conclusion, six varieties of Indonesian brow rice might be considered as the potent sources of bioactive compounds and antioxidant, especially in Inpari 17 variety.

Variety difference of physicochemical and cooking properties of selected brown rice from Thailand and Malaysia

Rice is a major staple food in Thailand and Malaysia. Although brown rice is a highly healthy substitute, preference is very low due to its texture and cooking quality. However, there are some brown rice varieties such as Sungyod (SY), Chiang (CH), Lepnok (LP) from Thailand and long grain specialty 1(LS1) and long grain specialty 2 (LS2) from Malaysian peninsula are commonly consumed in such areas. This study aimed to investigate the physicochemical and the cooking properties of these brown rice to understand the properties for better utilization. Therefore, Rapid visvo analyser (RVA), soaking characteristics, general cooking properties, textural properties and calorific values were measured and compared in 5 varieties of brown rice. Hydration kinetics indicated that LS1 and LS2 were faster in water absorption to reach plateau compared to the SY, LP, and CH. The cooking time of these brown rice was in the range from 29 to 35 min. The cooked brown rice had length/breadth (L/B) ratio (2.4 – 3.0), water uptake ratio (2.5 – 3.0), elongation ratio (1.1 –1.4) and gruel solid loss (3.2 – 5.2%). The hardness and the cohesiveness measured from texture analyzer were in the range of 6.75 – 15.5 N and 0.13 – 0.16. There was a significant variation in RVA pasting property of whole rice flour (p &lt; 0.05). The variations of different properties of brown rice could be considered for the processing of brown rice and its application.