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https://www.readbyqxmd.com/read/28627457/analysis-of-the-origins-of-content-non-uniformity-in-high-shear-wet-granulation
#1
Sarang Oka, David Smrčka, Anjali Kataria, Heather Emady, Fernando Muzzio, František Štěpánek, Rohit Ramachandran
In this study, the origins of granule content non-uniformity in the high-shear wet granulation of a model two-component pharmaceutical blend were investigated. Using acetaminophen as the active pharmaceutical ingredient (API) and microcrystalline cellulose as the excipient, the distribution of the API across the granule size classes was measured for a range of conditions that differed in the duration of the initial dry mixing stage, the overall composition of the blend and the wet massing time. The coarse granule fractions were found to be systematically sub-potent, while the fines were enriched in the API...
June 13, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28627454/synthesis-physiochemical-characterization-and-in-vitro-antitumor-activity-of-the-amide-and-ph-cleavable-hydrazone-conjugates-of-%C3%AE-tocotrienol-isomer-of-vitamin-e-with-methoxy-poly-ethylene-glycol
#2
Ahmed Abu-Fayyad, Sami Nazzal
The anticancer activity of water soluble methoxy polyethylene glycol (mPEG) derivatives of tocotrienol (T3) isomers of vitamin E was previously found to be reduced when compared to the parent free isomers. This could be due to the ester bond formation between the mPEG and the 6-OH group on the chroman moiety of the T3 isomer. To further investigate, the objectives of the current study were to (1) synthesize and characterize stable amide and cleavable hydrazone conjugates between mPEG and carbon-5 on the chroman moiety of T3, and (2) examine the cytotoxicity of the newly synthesized mPEG conjugates against breast (MCF-7 and MDA-MB-231) and pancreatic (BxPC-3 and PANC-1) cancer cells...
June 13, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28616927/-technology-and-methodssimultaneous-determination-of-9-natural-ingredientsin-functional-food-for-anti-hangover-and-hepatoprotection-by-high-performance-liquid-chromatography
#3
Hai-Min Zou, Chen Zhou, Cheng-Jun Sun, Yong-Xin Li, Xiao-Song Yang, Jun Wen, Hong-Yan Zeng
OBJECTIVES: To develop a rapid method of high performance liquid chromatography coupled with variable wave length UV detection for simultaneous determination of 9 natural functional ingredients including puerarin, silymarin, quercetin hydrate, schisandrol A, curcumin, tanshinoneI, tanshinoneIIA, cryptotanshinone, and dihydrotanshinoneIin functional food for anti-hangover and hepatoprotection. METHODS: The samples were ultrasonically extracted with 90 % ethanol (V/V) and centrifuged at 10 000 r/min for 10 min prior to HPLC analysis...
May 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28606809/animal-derived-natural-products-used-in-the-bhutanese-sowa-riga-medicine
#4
Karma Yeshi, Paolo Morisco, Phurpa Wangchuk
ETHNOPHARMACOLOGICAL RELEVANCE: Bhutan has two traditional healing systems: a folklore medicine and the Bhutanese Sowa Rigpa medicine (BSM). Three different types of ingredients namely plants, animals (and their derived products) and minerals are used for the preparation of various formulations in combined form. Animals and their derived products are vital ingredients in the preparation of numerous traditional remedies. Unlike medicinal plants, research on medicinal animals has remained largely untouched...
June 9, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28606515/properties-of-soluble-dietary-fiber-polysaccharide-from-papaya-peel-obtained-through-alkaline-or-ultrasound-assisted-alkaline-extraction
#5
Weimin Zhang, Guanglin Zeng, Yonggui Pan, Wenxue Chen, Wuyang Huang, Haiming Chen, Yuansong Li
Soluble dietary fiber (SDF) from the peel of papaya (Carica papaya Linn.) was recovered through alkaline extraction (alkaline-extracted SDF, a-SDF) and ultrasound-assisted alkaline extraction (ultrasound-treated SDF, u-SDF) processes, and the composition, structure and properties of the extracts were compared. The optimal parameters for obtaining the maximum extraction yield of u-SDF were evaluated through response surface methodology. Under optimal conditions, the maximum yield of u-SDF was 36.99%, and u-SDF had a lower total amino acid content but a higher essential amino acid (16...
September 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28605829/application-of-metabolomics-to-quality-control-of-natural-product-derived-medicines
#6
REVIEW
Kyung-Min Lee, Jun-Yeong Jeon, Byeong-Ju Lee, Hwanhui Lee, Hyung-Kyoon Choi
Metabolomics has been used as a powerful tool for the analysis and quality assessment of the natural product (NP)-derived medicines. It is increasingly being used in the quality control and standardization of NP-derived medicines because they are composed of hundreds of natural compounds. The most common techniques that are used in metabolomics consist of NMR, GC-MS, and LC-MS in combination with multivariate statistical analyses including principal components analysis (PCA) and partial least squares-discriminant analysis (PLS-DA)...
June 14, 2017: Biomolecules & Therapeutics
https://www.readbyqxmd.com/read/28605826/inhibition-of-hazardous-compound-formation-in-muscle-foods-by-antioxidative-phytophenols
#7
REVIEW
Youling L Xiong
Individual and mixed herbal extracts, as well as plant spices, are widely used in the preparation of muscle foods to enhance the organoleptic attributes. Abundantly rich in phenolic compounds, many of the phytochemical extracts have been shown to possess strong radical-scavenging and metal ion-binding properties and hence exert antioxidant activity in meat products. Because of their antiradical nature, phenolic acids and flavonoids, such as tea catechins, caffeic acid, chlorogenic acid, and mixed polyphenols derived from rosemary, licorice, and other herbal materials, are capable of inhibiting the formation of harmful secondary products from oxidized lipids and proteins...
June 12, 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28603967/coffee-driven-green-activation-of-cellulose-and-its-use-for-all-paper-flexible-supercapacitors
#8
Donggue Lee, Yoon-Gyo Cho, Hyun-Kon Song, Sang-Jin Chun, Sang-Bum Park, Don-Ha Choi, Sun-Young Lee, JongTae Yoo, Sang-Young Lee
Cellulose, which is one of the most abundant and renewable natural resources, has been extensively explored as an alternative substance for electrode materials such as activated carbons. Here, we demonstrate a new class of coffee-mediated green activation of cellulose as a new environmentally benign chemical activation strategy and its potential use for all-paper flexible supercapacitors. A piece of paper towel is soaked in espresso coffee (acting as a natural activating agent) and then pyrolyzed to yield paper-derived activated carbons (denoted as "EK-ACs")...
June 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28602801/raman-imaging-of-cellular-uptake-and-studies-of-silver-nanoparticles-effect-in-bj-human-fibroblasts-cell-lines
#9
Monika Perlovska Harvanova, Jana Jiravova, Jakub Malohlava, Katerina Barton Tomankova, Dagmar Jirova, Hana Kolarova
Silver nanoparticles (AgNPs) have been widely studied for their beneficial antimicrobial effect and have been considered by some to be a safe ingredient, as penetration of metal nanoparticles through the skin in vivo has not been proven. However, AgNPs are becoming a commonly applied nanomaterial for surface modifications of medical products which come into contact with damaged skin. In our experiments, we tested two commercially available AgNPs samples manufactured by electrolysis. AFM was used to characterize tested AgNPs morphology and their mean particle size which was assessed as 30...
June 7, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28600852/extraction-methods-and-food-uses-of-a-natural-red-colorant-from-dye-sorghum
#10
Fug Akogou, App Kayodé, Hmw den Besten, A R Linnemann
BACKGROUND: The interest in stable natural colorants for food applications continues to grow. A red pigment extracted from the leaf sheaths of a sorghum variety (Sorghum bicolor) with a high content of apigeninidin is widely used as a biocolorant in processed foods in West-Africa. This study compared the colour and the anthocyanin composition from traditional extraction methods to determine options for improvement and use of the red biocolorant from dye sorghum in the food sector. RESULTS: Sorghum biocolorant was commonly applied in fermented and heated foods...
June 10, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28600204/antioxidant-antimicrobial-cell-viability-and-enzymatic-inhibitory-of-antioxidant-polymers-as-biological-macromolecules
#11
REVIEW
Hadi Hashemi Gahruie, Mehrdad Niakousari
Polymeric antioxidants such as Catechinaldehyde Polycondensates, Catechin-acelaldehydepolycondensates, Flavonoid-grafted chitosan fibers, Ferulate hydrogel, Dextran ferulate hydrogel, Starch-quercetin conjugate, Gallic acid- and Caffeic acid-functionalized chitosan, Gallic acid - chitosan conjugate, Poly(rutin), Gallic acid grafted chitosan, Dextran-Catechin Conjugate belong to biological macromolecules. These kinds of compounds have stronger antioxidant potential and pharmacokinetic activities, as compared to similar low molecular weight preservatives...
June 6, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28599092/antioxidant-and-proteinase-inhibitory-activities-of-selected-poppy-papaver-somniferum-l-genotypes
#12
Erik Krošlák, Tibor Maliar, Peter Nemeček, Jana Viskupičová, Mária Maliarová, Michaela Havrlentová, Ján Kraic
Poppy seeds (Papaver somniferum L.) belong to tasty food ingredients however, they should be considered also as valuable source of biologically active compounds. Content of selected metabolites, antioxidant and proteinase inhibitory activities were analyzed in vitro in extracts from seeds of fifteen poppy genotypes. Considerable variation in all parameters was detected within the set of analyzed poppy genotypes. The genotype Major expressed the highest antioxidant activity determined by all four methodological approaches (DPPH, ABTS, FRAP, RP)...
June 9, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28596036/the-oriented-processes-for-extraction-and-recovery-of-paracetamol-compound-across-different-affinity-polymer-membranes-parameters-and-mechanisms
#13
E H El Atmani, A Benelyamani, H Mouadili, S Tarhouchi, S Majid, K Touaj, L Lebrun, M Hlaibi
Membrane processes represent one of the most promising technologies for separation and extraction in modern industries, because they have several advantages. Today these processes are an important research topic, including affinity polymer membranes that are highly efficient for oriented processes. Three affinity polymer membrane types containing lipophilic compounds, methyl cholate (MC) and cholic acid (CA) as extractive agents were prepared and characterized. They have been used to extract active ingredient paracetamol (acetaminophen), from concentrated solutions (0...
June 6, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28595956/our-unrequited-love-for-natural-ingredients
#14
REVIEW
George A Burdock, Wendan Wang
Naturally sourced food ingredients have been the beneficiary of legal, regulatory and consumer preference as the result of a widely shared assumption of safety. However, the natural substances consumed in modernity may have little to do with the historically consumed part of the plant or even the plant itself. Further, our initial impression of a safe plant derivative may well be false as the result of the use of different growth conditions or, changes in harvesting and processing conditions that may have brought about a higher level of toxic constituents...
June 5, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28594241/hepatotoxicity-evaluation-of-traditional-chinese-medicines-using-a-computational-molecular-model
#15
Pan Zhao, Bin Liu, Chunya Wang
BACKGROUND: Liver injury caused by traditional Chinese medicines (TCMs) is reported from many countries around the world. TCM hepatotoxicity has attracted worldwide concerns. OBJECTIVE: This study aims to develop a more applicable and optimal tool to evaluate TCM hepatotoxicity. METHODS: A quantitative structure-activity relationship (QSAR) analysis was performed based on published data and U.S. Food and Drug Administration's Liver Toxicity Knowledge Base (LTKB)...
June 8, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28594102/the-inhibition-effects-of-some-natural-products-on-lactoperoxidase-purified-from-bovine-milk
#16
Zeynep Köksal, Ramazan Kalın, Serpil Gerni, İlhami Gülçin, Hasan Özdemir
In this study, inhibition profiles of some natural products, which are digoxin, L-Dopa, dopamine, isoliquiritigenin, and 1,1,2,2-tetrakis(p-hydroxyphenyl)ethane (Tetrakis), were investigated against bovine lactoperoxidase (LPO) enzyme. Digoxin, L-Dopa, and dopamine are active ingredients of some drugs, which have important functions in our body, especially in cases of heart failure. Isoliquiritigenin and tetrakis are types of natural phenolic compounds, which play an important role in cancer prevention and treatment...
June 8, 2017: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/28590128/antibacterial-actions-of-glycinin-basic-peptide-against-escherichia-coli
#17
Guo-Ping Zhao, Ying-Qiu Li, Gui-Jin Sun, Hai-Zhen Mo
Glycinin basic peptide (GBP) is an antibacterial ingredient that occurs naturally in the basic parts of soybean glycinin. The antibacterial actions of GBP against Escherichia coli ATCC 8739 were investigated in this study. The minimum inhibitory concentration of GBP against E. coli was 200 μg/mL. The exposure of E. coli cells to GBP induced significant cell damage and inactivated intracellular esterases (stressed and dead cells, 70.9% ± 0.04 for 200 μg/mL of GBP and 91.9% ± 0.06 for 400 μg/mL of GBP), as determined through dual staining in flow cytometry...
June 7, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28588600/date-palm-tree-phoenix-dactylifera-l-natural-products-and-therapeutic-options
#18
REVIEW
Reem A Al-Alawi, Jawhara H Al-Mashiqri, Jawaher S M Al-Nadabi, Badria I Al-Shihi, Younis Baqi
Many plants, including some of the commonly consumed herbs and spices in our daily food, can be safely and effectively used to prevent and/or treat some health concerns. For example, caffeine the active ingredient found in coffee beans (Coffea), shows biological activity in the treatment of the central nervous system (CNS) disorders, indole-3-carbinol, and 3,3'-diindolylmethane are both broccoli (Brassica oleracea) derived phytochemicals with potential anti-cancer activity, and resveratrol, isolated from grape (Vitis vinifera), is reported to extend lifespan and provide cardio-neuro-protective, anti-diabetic, and anti-cancer effects...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28585166/development-of-media-to-accelerate-the-isolation-of-indigo-reducing-bacteria-which-are-difficult-to-isolate-using-conventional-media
#19
Masatoshi Nishita, Kikue Hirota, Hidetoshi Matsuyama, Isao Yumoto
Indigo-reducing bacteria perform natural fermentation in indigo fermentation fluid. Owing to the stochastic nature of the process, the constituent in indigo fermentation fluid differ depending on the prepared batch and fermentation period. To identify new indigo-reducing bacteria, isolation of the bacteria is indispensable. However, isolation of indigo-reducing bacteria is difficult because conventional media are often unsuitable to isolate these slow-growing bacteria that also exist in low numbers. Hydrolysates of polysaccharides and mixtures of plant base constituents are candidates to accelerate the isolation of indigo-reducing bacteria that cannot be isolated using conventional media...
July 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28584631/drug-development-lessons-from-nature
#20
Sunil Mathur, Clare Hoskins
Natural products have been acknowledged for numerous years as a vital source of active ingredients in therapeutic agents. In particular, the use of active ingredients derived from plants for use in microbial natural products have long been used before the dawn of modern medicine. From ancient times, the efficacy of natural products has been associated with the chemistry, biochemistry and synthetic activities of natural products. Thus, with scientific advancement in modern molecular and cellular biology, analytical chemistry and pharmacology, the unique properties of these natural products are being harnessed in order to exploit the chemical and structural diversity and biodiversity of these types of products in relation to their therapeutic effect...
June 2017: Biomedical Reports
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