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Vasoprotective effects of rice bran water extract on rats fed with high-fat diet

Asian Pacific Journal of Tropical Biomedicine 2016年第9期6卷 778-784页

作者： Narongsuk Munkong Pintusorn Hansakul Bhornprom Yoysungnoen Ariyaphong Wongnoppavich Seewaboon Sireeratawong Noppamat Kaendee Nusiri Lerdvuthisopon Department of Medicine School of MedicineUniversity of Phayao Department of Preclinical Science Faculty of MedicineThammasat University Department of Biochemistry Faculty of MedicineChiang Mai University Department of Pharmacology Faculty of MedicineChiang Mai University Department of Health Promotion Faculty of Health ScienceSrinakharinwirot University

Objective:To elucidate the protective effects of rice bran water extract on the expression of endothelial nitric oxide synthase(e NOS),nuclear factor-kappa B(NF-k B),and a cluster of differentiation 36(CD36) in the vasculature of high-fat diet-fed rats.Methods:Male Sprague-Dawley rats were divided into three groups.Group I served as control,Group II was treated with high-fat diet,and Group III was treated with high-fat diet and rice bran water extract at 2 205 mg/kg/day.After four weeks,the metabolic parameters,malondialdehyde as a marker of oxidative stress,and histological features of the aorta were evaluated.The levels of transcripts and proteins in aorta were determined by real-time PCR and Western blot analysis,respectively.Results:In comparison with the Group II,rice bran water extract administration resulted in a significant reduction in body weight,visceral fat tissue weights,blood glucose levels,and serum total-cholesterol and free fatty acid levels in Group III.Serum triglyceride levels tended to decrease in the Group III.Also,rice bran water extract administration obviously decreased malondialdehyde levels in both serum and aorta.Interestingly,rice bran water extract treatment demonstrated a significant up-regulation of e NOS expression and down-regulation of NF-k B p65 and CD36 expressions.Nonetheless,all groups showed normal histology of aorta.Conclusions:Rice bran water extract exhibited vasoprotective effects in the high-fat diet-induced obesity condition by modulating the expression of e NOS,NF-kB,and CD36 and metabolic parameters.

关键词： Rice bran Metabolic syndrome Cardiovascular disease Endothelial nitric oxide synthase Nuclear factor-kappa B Cluster of differentiation 36

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Effects of Polishing on Proximate Composition,Physico-Chemical Characteristics,Mineral Composition and Antioxidant Properties of Pigmented Rice

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水稻科学：英文版 2017年第5期24卷 241-252页

作者： Chagam Koteswara REDDY Lalmuan KIMI Sundaramoorthy HARIPRIYA Nayoung KANG Department of Food Science and Technology Pondicherry University School of Life Sciences and Biotechnology Korea University

The effects of polishing on proximate compositions,physico-chemical characteristics,mineral compositions and antioxidant properties of the rice flours obtained from three different pigmented rice varieties(Chak-hao Angangba,Chak-hao Amubi and Chak-hao Poireiton) were investigated.The rice varieties were significantly(P < 0.05) different in the contents of the test characteristics.Lipids,ash,minerals,phytochemicals(phenolic acids and flavonoids) and 2,2-diphenyl-1-picrylhydrazyl(DPPH) activity of rice flours were decreased after polishing(9% degree of milling),while amylose content and lightness were increased.X-ray diffraction pattern of rice flours exhibited A-type crystalline pattern with reflections at 15.1o,17.1o,18.2o and 23.0o.Pasting properties and transition temperatures were decreased after polishing treatment.Polishing resulted in changes in the crystallinity,enthalpy and morphology of rice flours.

关键词： amylose antioxidant property crystallinity gelatinization mineral pigmented rice polishing pasting property bran

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Thai pigmented rice bran extracts inhibit production of superoxide, nitric oxide radicals and inducible nitric oxide synthase in cellular models

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Asian Pacific Journal of Tropical Biomedicine 2019年第7期9卷 291-298页

作者： Kedsara Junmarkho Pintusorn Hansakul Biochemistry and Molecular Biology Graduate Program Faculty of MedicineThammasat UniversityKlongluangPathumthani12120Thailand Biochemistry Division Department of Preclinical ScienceFaculty of MedicineThammasat UniversityKlongluangPathumthani12120Thailand

Objective:To study the inhibitory effect of rice bran extracts of Thai black Kam Muang and red Hawm Dawk Mali Deang on oxidative stress factors including superoxide(O2·-),nitric oxide(NO·),and inducible nitric oxide synthase(iNOS).Methods:bran extracts(40%ethanol)of Kam Muang and Hawm Dawk Mali Deang were obtained and evaluated for in vitro 2-2′-azino-di-(3-ethylbenzthiazoline sulfonate)(ABTS)and NO·scavenging activity.Their inhibitory effects on cellular O2·-and NO·were measured in phorbol 12-myristate 13-acetate-stimulated neutrophil-like HL-60 cells and lipopolysaccharidestimulated RAW264.7 macrophages,respectively,and their viability was monitored using the MTT assay.The effect on iNOS expression was also assessed by the Western blotting assay.Total contents of phenolics,flavonoids,and subtypes were also determined.Results:Hawm Dawk Mali Deang exhibited about 3.5-fold greater cellular O2·-inhibitory activity than Kam Muang[EC50 values of(23.57±4.54)and(81.98±1.45)μg/mL,respectively]in phorbol 12-myristate 13-acetate-stimulated HL-60 cells.Hawm Dawk Mali Deang exhibited about 2-fold higher in vitro ABTS·+and NO·scavenging activity than Kam Muang,but it exerted cellular NO·inhibitory activity of only about 26%(undetermined EC50 value)in lipopolysaccharide-stimulated RAW264.7 cells.Conversely,Kam Muang exerted potent cellular NO·inhibitory activity[EC50 value:(281.13±59.18)μg/mL]and dose-dependently decreased iNOS levels.No cytotoxicity of both extracts was detected in both cell types.As for corresponding contents,Hawm Dawk Mali Deang contained higher contents of phenolics and flavonoids than Kam Muang.Moreover,Kam Muang and Hawm Dawk Mali Deang had a high content of total anthocyanins[(14.73±0.52)mg C3GE/g of extract]and total proanthocyanidins[(115.13±1.47)mg CE/g of extract],respectively.Conclusions:Based on these data,bran extracts of Thai black Kam Muang and red rice Hawm Dawk Mali Deang can help lower oxidative stress and inflammation attributed partly to O2·-and NO·.

关键词： Pigmented rice bran extracts Nitric oxide inhibitory activity Superoxide radical inhibitory activity iNOS

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Quantitative analysis of γ-oryzanol content in cold pressed rice bran oil by TLC-image analysis method

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Asian Pacific Journal of Tropical Biomedicine 2014年第2期4卷 119-123页

作者： Apirak Sakunpak Jirapornchai Suksaeree Chaowalit Monton Pathamaporn Pathompak Krisana Kraisintu Faculty of Pharmacy Rangsit University.Pathum Thani12000.Thailand Sino-Thai Traditional Medicine Research Center.Herbal Medicinal Products Research and Development Center(Cooperation between Rangsit University and Harbin Institute of Technology and Heilongjiang University of Chinese Medicine) Rangsil UniversityPathum Thani.12000Thailand Faculty of Oriental Medicine.Rangsit University Pathum Thani.12000Thailand

Objective:To develop and validate an image analysis method for quantitative analysis ofγ-oryzanol in cold pressed rice bran oil.Methods:TLC-densitometric and TLC-image analysis methods were developed,validated,and used for quantitative analysis of γ-oryzanol in cold pressed rice bran oil.The results obtained by these two different quantification methods were compared by paired t-test.Results:Both assays provided good linearity,accuracy,reproducibility and selectivity for determination of γ-oryzanol.Conclusions:The TLC-densitomelric and TLC-image analysis methods providett a similar reproducibility,accuracy and selectivity for the quantitative determination of γ-oryzanol in cold pressed rice bran oil.A statistical comparison of the quantitative determinations of γ-oryzanol in samples did not show any statistically significant difference between TLC-densitometric and TLC-image analysis methods.As both methods were found to be equal,they therefore can be used for the determination of γ-oryzanol in cold pressed rice bran oil.

关键词： γ-Oryzanol TLC-densitometric method TLC-image analysis method Rice bran oil Quantitative analysis

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Phytic Acid Contents of Wheat Flours from Different Mill Streams

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Agricultural Sciences in China 2010年第11期9卷 1684-1688页

作者： WU Peng ZHAO Tao TIAN Ji-chun State Key Laboratory of Crop Biology Shandong Agricultural University Tai ＇an 271018 P.R.China College of Food Science and Engineering Shandong Agricultural University Tai＇an 271018 P.R.China College of Horticulture Science and Engineering Shandong Agricultural University Tai ＇an 271018 P.R. China

The phytic acid contents of eight fractions of wheat flours from different mill streams and those in wheat brans, which were separated by different sieves into various sizes, were determined and analyzed. A rapid method for phytic acid assay by adding thioglycolic acid （mercapto acetic acid） with 2,2-bipyridine was used, with an acidic iron-Ⅲ-solution of known iron content. The amount ofphytate was indicated by the decrease in iron in the supernatant. Significant differences were observed in phytic acid content among different milling streams and different cultivars （P〈0.05）. On an average, coarse bran had the highest phytic acid content （53.85 mg g^-1）, and the shorts had 28.48 mg g^-1. The B5 break flour had a higher phytic acid content （4.8 mg g^-1） than the B7 （2.75 mg g^-1） and B8 （2.03 mg g^-1） reduction flours. Lower values were found in the B3, B6 and B7 flours （1.07, 0.79, and 0.76 mg g^-1, respectively）. The phytic acid contents of bran decreased with smaller bran sizes, ranging from 54 to 5.09 mg g^-1.

关键词： phytic acid wheat mill streams bran flour

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Process optimization for microencapsulation of probiotic yeasts

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Frontiers in Biology 2018年第3期13卷 197-207页

作者： Mangala Lakshmi Ragavan Nilanjana Das School of Bioscienees and Technology Vellore Institute of Technology Vellore Tamil Nadu India

Microencapsulation is a technique which improves the survival and viability of probiotics. We demonstrate encapsulation of five potential probiotic yeasts with alginate and gum as encapsulation matrices to improve their gastrointestinal transit. Gum extracted from various cereals viz. rice, oats, barley, finger millet and pearl millet along with alginate have been used to encapsulate five potential probiotic yeasts. Screening was carried out by measuring swelling index, encapsulation efficiency and nutritional value of microcapsules encapsulated with alginate and gum. The concentration of OBG, sodium alginate and inoculum dosage of probiotic yeasts was optimized using response surface methodology (RSM). Efficiency of alginate OBG microcapsules with or without coating materials viz. whey protein and chitosan also tested. The mucoadhesion ability and storage stability of alginate OBG microcapsules with coating materials were tested. Highest encapsulation efficiency of probiotic yeasts was noted using oats bran gum (OBG) microcapsules along with alginate in all the five probiotic yeasts. Notably whey protein coated microcapsules showed maximum GIT tolerance (95%) and mucoadhesion (90%) for L. starkeyi VIT-MN03. The minimum loss of viability was observed in L. starkeyi VITMN03 microcapsules on 60th day of storage. This is the first report on optimization and survival of microencapsulated probiotic yeasts under simulated GIT conditions using natural gum and alginate as encapsulation matrices and whey protein as coating material.

关键词： microencapsulation, oats bran gum （OBG）, probiotic yeast, response surface methodology, simulated GIT condition, whey protein

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Effects of cereal fiber on bowel function: A systematic review of intervention trials

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World Journal of Gastroenterology 2015年第29期21卷 8952-8963页

作者： Jan de Vries Paige E Miller Kristin Verbeke De Vries Nutrition Solutions Inc. Center for Epidemiology Biostatistics and Computational Biology Exponent Inc. Nutrition and Food Service Edward Hines Jr. VA Hospital Hines Department of Clinical and Experimental Medicine KU Leuven

AIM: To comprehensively review and quantitatively summarize results from intervention studies that examined the effects of intact cereal dietary fiber on parameters of bowel function. METHODS: A systematic literature search was conducted using Pub Med and EMBASE. Supplementary literature searches included screening reference lists from relevant studies and reviews. Eligible outcomes were stool wet and dry weight, percentage water in stools, stool frequency and consistency, and total transit time. Weighted regression analyses generated mean change(± SD) in these measures per g/d of dietary fiber. RESULTS: Sixty-five intervention studies among generally healthy populations were identified. A quantitative examination of the effects of non-wheat sources of intact cereal dietary fibers was not possible due to an insufficient number of studies. Weighted regression analyses demonstrated that each extra g/d of wheat fiber increased total stool weight by 3.7 ± 0.09 g/d(P bran dietary fiber, improves measures of bowel function.

关键词： Comprehensive review Dietary fiber Wheat bran Cereal Bowel function

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Influence of Jet-Cooking Corn bran on Its Antioxidant Activities, Phenolic Contents and Viscoelastic Properties

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Food and Nutrition Sciences 2011年第6期2卷 521-529页

作者： George E. Inglett Diejun Chen Mark Berhow 不详

Corn bran was subjected to high-shear and jet-cooking with or without alkaline treatment. The highest antioxidant activity was found in the soluble solids from jet-cooked corn bran without alkaline treatment. Jet-cooking under alkaline conditions resulted in a soluble fraction having the highest phenolic content but without increasing antioxidant activity. Phenolic contents of soluble solids were significantly higher than the insoluble solids. A colorimetric method using spectrophotometer was suitable to determine total phenolic content, whereas LC-ESI-MS technology was used for identifying important individual phenolic acids, namely caffeic, coumaric and ferulic acid. The insoluble solids from alkaline treatment had the highest water holding capacity and interesting viscoelastic properties. These results suggested that jet-cooking corn bran may be a useful processing procedure for creating phytochemical and functional products.

关键词： Corn bran Phenolic Contents Antioxidant Activity Jet-Cooking Water Holding Capacity Viscoelastic Properties

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Effect of Blended Rice bran and Olive Oil on Cardiovascular Risk Factors in Hyperlipidemic Patients

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Food and Nutrition Sciences 2013年第11期4卷 1084-1093页

作者： Monika Choudhary Kiran Grover Jasvinder Sangha Punjab Agricultural University Ludhiana India

The present study was designed to evaluate the effectiveness of blended rice bran and olive oil on hyperlipidemic subjects. A total of 60 moderately hyperlipidemic patients (Total Cholesterol (TC) >200 mg/dl and/or Triglycerides (TG) >150 mg/dl) with an age range of 45 - 60 were selected from Mediciti Hospital of Ludhiana and were divided into two groups: Group A and Group B containing 30 subjects each. The subjects of Group B were given blended rice bran and olive oil for a time period of 45 days and were asked to continue with their routine eating and physical activity pattern. The subjects of Group A were kept on their regular cooking oil. The serum lipid values were assessed before and after the study. Additional parameters assessed included anthropometry, dietary fat intake and physical activity pattern. The results showed that there was an insignificant change in the average body mass index (BMI) of the subjects of Group B before (27.0 kg/m2) and after (26.9 kg/m2) the study respectively. Also, there was an insignificant change in the lipid levels of the subjects of Group B after the study. The levels of TC and LDL cholesterol decreased by 3.7 and 9.0 percent respectively. Whereas, the levels of TG and VLDL cholesterol increased by 9.5 percent in the subjects of Group B after the feeding trials. Further, systolic and diastolic blood pressure of the subjects of Group B reduced by 2.9 and 2.3 percent respectively. An insignificant change was observed in all the parameters of selected subjects. So, the present study recommends carrying out more long duration research studies to evaluate the effectiveness of this blended oil.

关键词： Blended Rice bran and Olive Oil Hyperlipdemia Lipid Profile

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Effects of Tocols Rich Fraction Isolated from Rice bran Oil Deodorizer Distillate on Plasma and Hepatic Lipid Concentrations in Rats

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Journal of Biosciences and Medicines 2015年第9期3卷 1-8页

作者： Tina A. Gomes Xuan Gu Cindi R. Brownmiller Luke Howard Cesar M. Compadre Sun-Ok Lee Department of Food Science University of Arkansas Fayetteville USA Department of Pharmaceutical Science University of Arkansas for Medical Science Little Rock USA

A great deal of attention has been focused on the potential health benefits of using rice bran oil because it is a rich source of bioactive compounds. Rice bran oil deodorizer distillate (RBODD) is a byproduct obtained from distillation of rice bran oil. Elevated plasma cholesterol level is one of the major risk factors for coronary heart disease. The objective of this study was to investigate the effects of tocols (tocopherols + tocotrienols) rich fraction isolated from RBODD on plasma and liver lipid concentrations in rats. Male Sprague Dawley rats (6 weeks of age) were randomly assigned into three groups: normal fat control (NFC), high fat control (HFC) and high fat diet plus tocols rich fraction (RBODD). RBODD was administered daily for 3 weeks by oral gavage using 5% of Tween-80 as a vehicle. The rats in the control groups received 5% of Tween-80 alone in the same manner. Blood samples and livers were collected at the end of the feeding period. RBODD group had significantly lower plasma triglyceride levels compared to the HFC group (p < 0.05). However, no significant changes for plasma total and lipoprotein cholesterol levels were found in RBODD compared with HFC. Compared to the rat fed HFC, hepatic free fatty acids were significantly reduced in the rats with the RBODD treatment (p < 0.05). The results suggest that the tocols rich fraction isolated from RBODD is associated with decreased plasma triglyceride and hepatic free fatty acids concentrations. Further study is needed to investigate the mechanism and optimal dose by which isomers of tocols lower triglyceride concentrations.

关键词： Rice bran Oil Deodorizer Distillate Tocols Oral Gavage Triglycerides

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