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Publication Metadata only Comparison of Antioxidant Evaluation Assays for Investigating Antioxidative Activity of Gallic Acid and Its Alkyl Esters in Different Food Matrices(2017-08-30) Natthaporn Phonsatta; Pawinee Deetae; Pairoj Luangpituksa; Claudia Grajeda-Iglesias; Maria Cruz Figueroa-Espinoza; Jérôme Le Comte; Pierre Villeneuve; Eric A. Decker; Wonnop Visessanguan; Atikorn Panya; Thailand National Center for Genetic Engineering and Biotechnology; King Mongkut's Institute of Technology Ladkrabang; Mahidol University; Ingénierie des agropolymères et technologies émergentes; University of Massachusetts; King Abdulaziz University© 2017 American Chemical Society. The addition of antioxidants is one of the strategies to inhibit lipid oxidation, a major cause of lipid deterioration in foods leading to rancidity development and nutritional losses. However, several studies have... been reported that conventional antioxidant assays, e.g., TPC, ABTS, FRAP, and ORAC could not predict antioxidant performance in several foods. This study aimed to investigate the performance of two recently developed assays, e.g., the conjugatedPublication Metadata only Apolar Radical Initiated Conjugated Autoxidizable Triene (ApoCAT) Assay: Effects of Oxidant Locations on Antioxidant Capacities and Interactions(2015-09-02) Atikorn Panya; Waranya Temthawee; Natthaporn Phonsatta; Danai Charoensuk; Pawinee Deetae; Wonnop Visessanguan; Eric A. Decker; Thailand National Center for Genetic Engineering and Biotechnology; Mahidol University; University of Massachusetts; King Abdulaziz University© 2015 American Chemical Society. Development of an antioxidant assay explaining antioxidant behaviors in complex food systems has been a challenging topic for food scientists. This research aimed to investigate antioxidant capacities... and interactions of selected synthetic antioxidants and commercial natural antioxidant extracts using the CAT assay and a newly developed ApoCAT assay, which used water- and lipid-soluble azo radical initiators, respectively. Results suggested that the higherPublication Metadata only Conjugated Autoxidizable Triene-Based (CAT and ApoCAT) Assays: Their Practical Application for Screening of Crude Plant Extracts with Antioxidant Functions in Relevant to Oil-in-Water Emulsions(2019-01-01) Natthaporn Phonsatta; Pairoj Luangpituksa; Maria Cruz Figueroa-Espinoza; Jérôme Lecomte; Erwann Durand; Pierre Villeneuve; Wonnop Visessanguan; Pawinee Deetae; Umaporn Uawisetwathana; Wasinee Pongprayoon; Atikorn Panya; Ingénierie des agropolymères et technologies émergentes; King Mongkut's Institute of Technology Ladkrabang; Mahidol University; Thailand National Center for Genetic Engineering and Biotechnology; Burapha University© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Many previous reports suggested that conventional antioxidant assays could not forecast antioxidant performance of plant extracts, especially when it came to a real food system such as oil-in-water... emulsion. In this study, antioxidant activities of aqueous and ethanolic plant extracts are investigated using multiple conventional assays (TPC, ABTS, FRAP, ORAC) and the oil-in-water (O/W) emulsion-based high throughput assays (the CAT and ApoCAT) in aPublication Metadata only Alteration of antioxidative properties of longan flower-honey after high pressure, ultra-sonic and thermal processing(2015-06-01) Pittaya Chaikham; Pattaneeya Prangthip; Rajabhat University; Mahidol Universityand antioxidant capacities of honey from the longan flower. Total phenolic compounds, total flavonoids and antioxidant capacity (DPPH and FRAP assays) were determined. It was found that high pressure, ultra-sonic and thermal treatments had a significant effect... on antioxidative properties of honey sample. After pressurization, the quantities of total phenols, flavonoids and antioxidant capacity in honey signi ficantly increased with the increasing pressure levels and processing times, in particular samples pressurizedPublication Metadata only The effect of storage conditions on antioxidant activities and total phenolic contents of parboiled germinated brown rice (Khao Dok Mali 105)(2016-01-01) C. Sripum; R. K. Kukreja; S. Charoenkiatkul; W. Kriengsinyos; U. Suttisansanee; Mahidol UniversityRice (Oryza sativa) is a staple crop that has supplied over half of the world's population. Our preliminary data suggested that parboiled germinated brown rice exhibited higher antioxidant activities and total phenolic contents than germinated brown... rice, brown rice and white rice, respectively. Nevertheless, the information on the stability of the antioxidant capacities and total phenolic contents in parboiled germinated brown rice is unavailable. Therefore, this research aimed to investigatePublication Metadata only Effects of cooking on antioxidant activities and polyphenol content of edible mushrooms commonly consumed in Thailand(2011-01-01) Aikkarach Kettawan; Kunlaya Chanlekha; Ratchanee Kongkachuichai; Rin Charoensiri; Mahidol UniversityThe effect of boiling on ten edible mushroom varieties was analyzed for antioxidant activities by three different assays (ORAC, FRAP and DPPH) and polyphenol content. The results indicated that the boiling process significantly decreased both... antioxidant activities and polyphenol content in all mushroom varieties. Antioxidant activities and the polyphenol content of boiled mushrooms can be ranked from high to low as A. hygrometricus > A. Cylindracea > V. volvacea > L. edodes > P. eryngiiPublication Metadata only Antioxidant activity and upregulation of antioxidant enzymes of phenolic glycosides from Aquilaria crassna leaves(2017-01-01) Chonlakan Supasuteekul; Narawat Nuamnaichati; Supachoke Mangmool; Kittisak Likhitwitayawuid; Parkpoom Tengamnuay; Waraporn Putalun; Boonchoo Sritularak; Chulalongkorn University; Mahidol University; Khon Kaen UniversityThe leaves of Aquilaria crassna Pierre ex Lecomte (Thymelaeaceae) have been used in the traditional medicine and consumed as a health-promoting tea in several Asian countries. This study investigated the antioxidant activity of three major bioactive... expressions of antioxidant enzymes in HEK-293 cells. The benzophenone glycoside 3 exhibited significant scavenging activity against both types of free radicals and increased the mRNA expression of antioxidant enzymes such as glutathione peroxidase-1Publication Metadata only Changes of antioxidant activity and total phenolic compounds during storage of selected fruits(2008-05-01) Oruma Patthamakanokporn; Prapasri Puwastien; Anadi Nitithamyong; Prapaisri P. Sirichakwal; Mahidol UniversityThe antioxidant activity and total phenolic compounds in various fruits (common fruits-two varieties of mangoes (ripe and unripe), guava, papaya, mangosteen and banana; and two indigenous fruits-makiang and maluod) were investigated. Banana... and papaya showed the lowest activity, and mangosteen, mango and guava exhibited high levels of antioxidant activity (oxygen radical absorbance capacity (ORAC), and ferric-reducing antioxidant power (FRAP)) as well as total phenolic compounds. The studiedItem Metadata only Antioxidative Effects of Defatted Rice Bran in Rats on AOM/DSS-Induced Colon Oxidative Stress and Correlations Between Gut Microbiota and Antioxidant Biomarkers(2025-08-01) Wunjuntuk K.; Tajasuwan L.; Kettawan A.; Rungruang T.; Prombutara P.; Prangthip P.; Chaisri A.; Nirmal N.; Kettawan A.K.; Kettawan A.; Mahidol UniversityDefatted rice bran (DRB), a by-product of Thai Oryza sativa, is rich in dietary fiber and antioxidant phytochemicals. This study investigated the bioaccessibility, antioxidative efficacy, and prebiotic potential of DRB in colorectal cancer (CRC...) models. Simulated gastrointestinal digestion demonstrated high bioaccessibility of flavonoids (79%) and phenolics (62%), along with substantial antioxidant activity: DPPH (57%), FRAP (83%), and ORAC (74%). In vitro, digested DRB significantly reducedPublication Metadata only Antioxidant capacity, total phenolics and sugar content of selected thai health beverages(2007-02-01) Pajaree Abdullakasim; Sriwatana Songchitsomboon; Marasri Techagumpuch; Nattaya Balee; Prasan Swatsitang; Pongtorn Sungpuag; Mahidol University; The Royal Chitralada Projects; Khon Kaen UniversityThis study was to determine antioxidant capacity, total phenolics and sugar content of 12 pasteurized and sterilized Thai health beverages, products of The Royal Chitralada Projects. The antioxidant capacities were analyzed using 2,2-diphenyl-1... highest antioxidant capacity in both equivalents to trolox and equivalents to ascorbic acid but not in the PCL test. In contrast, chrysanthemum drink and roselle drink showed the significantly highest values of both the total antioxidant capacity of water