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Geerada Kaewjumpol, Maria J Oruna-Concha, Keshavan Niranjan, Supawan Thawornchinsombut
BACKGROUND: This research employed mild-subcritical alkaline water extraction (SAW) technique to overcome the difficulty of active compounds extractability from an industrially defatted rice bran (IDRB). Mild-SAW (pH 9.5, 130 °C, 120 min) treatment, followed by enzymatic hydrolysis (Protease G6) were applied to produce rice bran hydrolysate (RBH). Response surface methodology was used to identify proteolysis conditions for maximizing protein content and ABTS radical scavenging activity (ABTS-RSA)...
December 14, 2017: Journal of the Science of Food and Agriculture
Fan Wang, Shuai Wang, Tao Yi, Ji-Fen Zhang
To investigate the effects of drug and oil properties on the formation and stability of drug nanocrystalline self-stabilizied Pickering emulsions (NSSPE). Three insoluble Chinese medicine components (puerarin, tanshinone ⅡA and ferulic acid) were selected as model drugs, and Capmul C8, Fabrafil M 1944 CS, isopropyl myristate, Pzechwan Lovage Rhizome oil, and olive oil were used as oil phase. NSSPEs were developed by high pressure homogenization method and were evaluated for their appearance, centrifugal stability, droplet size and drug content changes in emulsion layer after storing at room temperature for 14 d...
October 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Nattapol Arunrattanamook, E Neil G Marsh
We have characterized the kinetics and substrate requirements of prenyl-flavin synthase from yeast. This enzyme catalyzes the addition of an isopentenyl unit to reduced flavin mononucleotide (FMN) to form an additional 6-membered ring that bridges N-5 and C-6 of the flavin nucleus, thereby converting the flavin from a redox cofactor to one that supports the decarboxylation of aryl carboxylic acids. In contrast to bacterial enzymes, the yeast enzyme was found to use dimethylallyl pyrophosphate, rather than dimethylallyl phosphate, as the prenyl-donor in the reaction...
December 12, 2017: Biochemistry
Cameron J Hunt, Io Antonopoulou, Akshat Tanksale, Ulrika Rova, Paul Christakopoulos, Victoria S Haritos
Ferulic acid esterases (FAE, EC cleave the arabinose hydroxycinnamate ester in plant hemicellulose and other related substrates. FAE are commonly categorised as type A-D based on catalytic activities towards model, short alkyl chain esters of hydroxycinnamates. However, this system correlates poorly with sequence and structural features of the enzymes. In this study, we investigated the basis of the type A categorisation of an FAE from Aspergillus niger, AnFaeA, by comparing its activity toward methyl and arabinose hydroxycinnamate esters...
December 11, 2017: Scientific Reports
Fansheng Kong, Zhipeng Su, Xiaoming Guo, Feng Zeng, Yongguang Bi
Clausena lansium (Lour.) Skeels (Wampee) is widely grown in China and considered as a healthy fruit. Its leaves are also considered as traditional herbs. This study analyzed polyphenol compounds in polyphenol extracts of the leaves C. lansium (lour.) Skeels (PEL) and investigated the protective effect of PEL against hyperglycemia and hyperlipidemia in T2DM rats. The result showed that PEL is composed mainly of gallic acid, chlorogenic acid, coffee acid, ferulic acid, and rutin. PEL could obviously relieve some symptoms of T2DM rats, including emaciation, hyperhidrosis, polyphagia, diuresis, liver swelling, kidney, and pancreas hypertrophy, as well as reduce fasting blood glucose...
December 11, 2017: Journal of Food Science
Ilyes Saidi, Pierre Waffo-Téguo, Asma E L Ayeb-Zakhama, Fethia Harzallah-Skhiri, Axel Marchal, Hichem Ben Jannet
A phytochemical investigation of the trunk bark ethyl acetate extract of Citharexylum spinosum L. has led to the isolation of four previously undescribed iridoid glycosides, tunispinosides A-D, and five known phenylethanoid glycosides, verbascoside, leucosceptoside A, martynoside, isoverbascoside and plantainoside C, together with 4-hydroxy-2,6-dimethoxyphenyl 6'-O-vanilloyl-β-D-glucopyranoside, two 8,3'-neolignan glycosides, plucheosides D1-D2, coniferyl aldehyde, vanillic acid, syringic acid, ferulic acid and tyrosol...
December 6, 2017: Phytochemistry
Ilias Marmouzi, El Mostafa Karym, Nezha Saidi, Bouchra Meddah, Mourad Kharbach, Azlarab Masrar, Mounya Bouabdellah, Layachi Chabraoui, Khalid El Allali, Yahia Cherrah, My El Abbes Faouzi
Improvement of oat lines via introgression is an important process for food biochemical functionality. This work aims to evaluate the protective effect of phenolic compounds from hybrid Oat line (F11-5) and its parent (Amlal) on hyperglycemia-induced oxidative stress and to establish the possible mechanisms of antidiabetic activity by digestive enzyme inhibition. Eight phenolic acids were quantified in our samples including ferulic, p-hydroxybenzoic, caffeic, salicylic, syringic, sinapic, p-coumaric and chlorogenic acids...
December 6, 2017: Antioxidants (Basel, Switzerland)
Xiaohong Wang, Yahong Chen, Qiang Wang, Lu Sun, Guiyun Li, Chanxi Zhang, Jianmei Huang, Lei Chen, Haifeng Zhai
Natural small-molecule phenols (NSMPs) share some bioactivities. The anxiolytic activity of NSMPs is attracting attention in the scientific community. This paper provides data supporting the hypothesis that NSMPs are generally anxiolytic. The anxiolytic activities of seven simple phenols, including phloroglucinol, eugenol, protocatechuic aldehyde, vanillin, thymol, ferulic acid, and caffeic acid, were assayed with the elevated plus maze (EPM) test in mice. The oral doses were 5, 10 and 20 mg/kg, except for phloroglucinol for which the doses were 2...
December 6, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Giorgio Ivan Russo, Daniele Campisi, Marina Di Mauro, Federica Regis, Giulio Reale, Marina Marranzano, Rosalia Ragusa, Tatiana Solinas, Massimo Madonia, Sebastiano Cimino, Giuseppe Morgia
Dietary polyphenols gained the interest of the scientific community due to their wide content in a variety of plant-derived foods and beverages commonly consumed, such as fruits, vegetables, coffee, tea, and cocoa. We aimed to investigate whether there was an association between dietary phenolic acid consumption and prostate cancer (PCa) in South Italy. We conducted a population-based case-control study from January 2015 to December 2016 in a single institution of the municipality of Catania, southern Italy (Registration number: 41/2015)...
December 5, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Aleksandar Cvetkovski, Valeria Ferretti, Valerio Bertolasi
Two mixed crystals were obtained by crystallizing the active pharmaceutical ingredient pyridoxine [systematic name: 4,5-bis(hydroxymethyl)-2-methylpyridin-3-ol, PN] with (E)-3-(4-hydroxy-3-methoxyphenyl)prop-2-enoic acid (ferulic acid) and 4-hydroxy-3,5-dimethoxybenzoic acid (syringic acid). PN and the coformers crystallize in the form of pharmaceutical salts in a 1:1 stoichiometric ratio, namely 3-hydroxy-4,5-bis(hydroxymethyl)-2-methylpyridin-1-ium (E)-3-(4-hydroxy-3-methoxyphenyl)prop-2-enoate, C8H12NO3+·C9H9O5-, and 3-hydroxy-4,5-bis(hydroxymethyl)-2-methylpyridin-1-ium 4-hydroxy-3,5-dimethoxybenzoate monohydrate, C8H12NO3+·C10H11O5-·H2O, the proton exchange between PN and the acidic partner being supported by the differences of the pKa values of the two components and by the C-O bond lengths of the carboxylate groups...
December 1, 2017: Acta Crystallographica. Section C, Structural Chemistry
Hasan Ufuk Celebioglu, Marta Delsoglio, Susanne Brix, Enrica Pessione, Birte Svensson
SCOPE: Plant phenolics, known to exert beneficial effects on human health, were supplemented to cultures of the probiotic bacterium Lactobacillus acidophilus NCFM (NCFM) to assess their effect on its adhesive capacity and the abundancy of individual proteins. METHODS AND RESULTS: The presence of resveratrol and ferulic acid during bacterial growth stimulated adhesion of NCFM to mucin and human intestinal HT-29 cells, while tannic acid improved adhesion only to HT-29 cells and caffeic acid had very modest effect overall...
December 4, 2017: Molecular Nutrition & Food Research
Marianne Schmidt, Josef Skaf, Georgiana Gavril, Christine Polednik, Jeanette Roller, Michael Kessler, Ulrike Holzgrabe
BACKGROUND: According to only a handful of historical sources, Osmunda regalis, the royal fern, has been used already in the middle age as an anti-cancer remedy. To examine this ancient cancer cure, an ethanolic extract of the roots was prepared and analysed in vitro on its effectiveness against head and neck cancer cell lines. METHODS: Proliferation inhibition was measured with the MTT assay. Invasion inhibition was tested in a spheroid-based 3-D migration assay on different extracellular matrix surfaces...
December 4, 2017: BMC Complementary and Alternative Medicine
Katsuya Tajima, Masuro Motoi, Akitomo Motoi, Daisuke Yamanaka, Ken-Ichi Ishibashi, Yoshiyuki Adachi, Naohito Ohno
The royal sun medicinal mushroom, Agaricus brasiliensis, is a health food material that helps to improve quality of life. A. brasiliensis has long been used as a tea by extraction with cold and hot water. Our group has been investigating the immunopharmacological activities of the A. brasiliensis KA21 strain, which is cultivated outdoors. We prepared cold water (AgCWE) and hot water (AgHWE) extracts of this strain. AgCWE contained a larger proportion of proteins, including enzymes, and showed a brownish color during the extraction process...
2017: International Journal of Medicinal Mushrooms
Przemysław Sitarek, Tomasz Kowalczyk, Patricia Rijo, Adam J Białas, Marzena Wielanek, Halina Wysokińska, Catarina Garcia, Monika Toma, Tomasz Śliwiński, Ewa Skała
This study examines the production of five phenolic acids (chlorogenic acid, neochlorogenic acid, ferulic acid, caffeic acid and p-coumaric acid) following over-expression of AtPAP1 transcription factor by four transgenic root clones of Leonurus sibiricus after Agrobacterium rhizogenes transformation. The AtPAP1 expression level was estimated by quantitative real-time PCR. High levels of phenolic acids were found in the transgenic roots of L. sibiricus and were determined by high-performance liquid chromatography-mass spectrometry analysis...
December 1, 2017: Molecular Biotechnology
Parichehr Hassanzadeh, Elham Arbabi, Fatemeh Atyabi, Rassoul Dinarvand
AIMS: Treatment of the ischemic stroke has remained a major healthcare challenge. The phenolic compound, ferulic acid (FA), has shown promising antioxidant and neuroprotective effects, however, low bioavailability may negatively affect its efficiency. This, prompted us to incorporate FA into the nanostructured lipid carriers (FA-NLCs) and evaluate its therapeutic potential in in vitro and in vivo models of ischemic stroke. MAIN METHODS: FA-NLCs were prepared by high-pressure homogenization followed by physicochemical characterization, evaluation of the bioactivity of FA-NLCs in oxygen-glucose deprivation (OGD) and global cerebral ischemia/reperfusion (I/R) injury and implication of phosphatidylinositol 3-kinase (PI3K) pathway in this regard...
November 28, 2017: Life Sciences
Rosanna De Paula, Iwona Rabalski, Maria Cristina Messia, El-Sayed M Abdel-Aal, Emanuele Marconi
Phenolic acids, total phenolics content and DPPH radical scavenging capacity in raw ingredients, fresh and dried spaghetti, and in uncooked and cooked spaghetti were evaluated and compared with semolina spaghetti as a reference. Ferulic acid was the major phenolic acid found in the free and bound phenolic extracts in all the investigated pasta samples. The addition of barley flour into pasta at incorporation levels of 30, 50 and 100% increased phenolic acids and total phenolics content. Pasta processing did not significantly affect the total phenolics content and free radical scavenging capacity, but a significant reduction in total phenolic acids measured by HPLC was found...
December 2017: Food Research International
Roberto Gotti, Elisa Amadesi, Jessica Fiori, Sara Bosi, Valeria Bregola, Ilaria Marotti, Giovanni Dinelli
Phenolic compounds have received great attention among the health promoting phytochemicals in common wheat (Triticum aestivum L.), mainly because of their strong antioxidant properties. In the present study a simple Capillary Zone Electrophoresis (CZE) method with UV detection was optimized and validated for the quantitation of six of the most important phenolic acids in whole grain i.e., sinapic, ferulic, syringic, p-coumaric, vanillic and p-hydroxybenzoic acid. The separation was achieved in a running buffer composed of sodium phosphate solution (50 mM) in water/methanol 80:20 (v/v) at pH 6...
November 26, 2017: Journal of Chromatography. A
Eva Koubová, Martina Mrázková, Daniela Sumczynski, Jana Orsavová
BACKGROUND: Total phenolic content, the most common phenolics profile and antioxidant activity have been determined in free and bound phenolic fractions of thermally treated brown and white teff grains. RESULTS: Phenolic content in raw brown and white teff (1540 and 992 mg GAE kg-1 ) as well as antioxidant activity (6.3 and 5.5 mmol TE kg-1 ) were higher in free phenolic fractions. The most significant decrease in total phenolics has been observed after the application of sous-vide method (35% for brown and 11% for white variety)...
November 28, 2017: Journal of the Science of Food and Agriculture
Dan Zhao, Tong-Yu Wu, Yong-Qiang Guan, Guo-Xu Ma, Jing Zhang, Lei-Ling Shi
The constituents from 95% ethanol extract of the roots of Stelleropsis tianschanica were purified by column chromatography techniques, leading to the isolation of 17 compounds. Their structures were elucidated by spectroscopic dataas 5'-methoxy lariciresinol(1), pinoresinol(2), daphnoretin(3), acutissimalignan B(4),(+)-secoisolariciresinol(5),(+)-epipinoresinol(6), 7-methyi-daphnoretin(7), thero-8S-7-methoxysyringylglycerol(8), 1-O-methyl-guaiacylglycerol(9), 2R-22'-ferulic acid ester-2,3-dihydroxypropyl ester(10), vesiculosin(11), 4β,5βH-guai-9,7(11)-dien-12,8-olide-1α,8α-diol(12),(-)-nortrachelogenin(13), 4α,5βH-guai-9,7(11)-dien-12,8-olide-1α,8α-diol(14), matairesinol(15), lariciresinol(16)and isolariciresinol(17)...
September 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Yong-Mei Guan, Ling Tao, Xiao-Fang Zhu, Zhen-Zhong Zang, Chen Jin, Li-Hua Chen
The aim of this paper was to explore the effects of Frankincense and Myrrh essential oil on transdermal absorption, and investigate the mechanism of permeation on the microstructure and molecular structure of stratum corneum. Through the determination of stratum corneum/medium partition coefficient of ferulicacid in Chuanxiong influenced by Frankincense and Myrrh essential oil, the effects of volatile oil of frankincense and Myrrh on the the microscopic and molecular structure of stratum corneum were explored by observation of skin stratum corneum structure under scanning electron microscopy, and investigation of frankincense and myrrh essential oil effects on the molecular structure of keratin and lipids in stratum corneum under Fourier transform infrared spectroscopy...
September 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
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