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https://www.readbyqxmd.com/read/28209019/efficacy-of-specific-plant-products-on-microorganisms-causing-dental-caries
#1
M Rajini Kanth, A Ravi Prakash, G Sreenath, Vikram Simha Reddy, S Huldah
INTRODUCTION: Dental caries and periodontal diseases are the most common oral diseases seen globally, both in developed and developing countries. Oral microorganisms that is gram positive and gram negative bacteria are known to be involved in causation of these diseases. Nowadays commercially available dentrifices and mouth rinses are known to contain ingredients that can alter the oral microbial flora and have undesirable side effects such as vomiting, diarrhoea, disarrangement of oral, intestinal flora and tooth staining...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208818/hydroxycinnamic-acids-and-their-derivatives-cosmeceutical-significance-challenges-and-future-perspectives-a-review
#2
Oludemi Taofiq, Ana M González-Paramás, Maria Filomena Barreiro, Isabel C F R Ferreira
Bioactive compounds from natural sources, due to their widely-recognized benefits, have been exploited as cosmeceutical ingredients. Among them, phenolic acids emerge with a very interesting potential. In this context, this review analyzes hydroxycinnamic acids and their derivatives as multifunctional ingredients for topical application, as well as the limitations associated with their use in cosmetic formulations. Hydroxycinnamic acids and their derivatives display antioxidant, anti-collagenase, anti-inflammatory, antimicrobial and anti-tyrosinase activities, as well as ultraviolet (UV) protective effects, suggesting that they can be exploited as anti-aging and anti-inflammatory agents, preservatives and hyperpigmentation-correcting ingredients...
February 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28208811/does-the-valuation-of-nutritional-claims-differ-among-consumers-insights-from-spain
#3
Francesc Jurado, Azucena Gracia
The presence in the market of food products with nutritional claims is increasing. The objective of this paper is to assess consumers' valuation of some nutritional claims ('high in fiber' and 'reduced saturated fat') in a European country and to test for differences among consumers. An artefactual non-hypothetical experiment was carried out in a realistic setting (mock/real brick-and-mortar supermarket) with a sample of 121 Spanish consumers stratified by gender, age, and body mass index. A latent class model was specified and estimated with the data from the experiment...
February 13, 2017: Nutrients
https://www.readbyqxmd.com/read/28208286/derivatization-technique-to-identify-specifically-carbonyl-groups-by-infrared-spectroscopy-characterization-of-photooxidative-aging-products-in-terpenes-and-terpeneous-resins
#4
Stefan Zumbühl, Andreas Brändle, Andreas Hochuli, Nadim C Scherrer, Walter Caseri
Analysis of bioorganic materials by infrared spectroscopy (FT-IR) is frequently limited due to overlapping of diagnostic bands from the various components, which poses a fundamental problem to this analytical technique. The distinction of oxidized di- and triterpenes, for example, is hindered by the superposition of similar absorption bands of carbonyl functional groups summing up to a broad, nondistinctive signal. This study presents a technique for selective fluorination of various carboxylic acids by exposure to gaseous sulfur tetrafluoride...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28206765/ultrafast-electronic-energy-transfer-in-an-orthogonal-molecular-dyad
#5
Christian Wiebeler, Felix Plasser, Gordon J Hedley, Arvydas Ruseckas, Ifor D W Samuel, Stefan Schumacher
Understanding electronic energy transfer (EET) is an important ingredient in the development of artificial photosynthetic systems and photovoltaic technologies. Although EET is at the heart of these applications and crucially influences their light-harvesting efficiency, the nature of EET over short distances for covalently bound donor and acceptor units is often not well understood. Here we investigate EET in an orthogonal molecular dyad (BODT4), in which simple models fail to explain the very origin of EET...
February 21, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28203099/a-new-dermocosmetic-containing-retinaldehyde-delta-tocopherol-glucoside-and-glycylglycine-oleamide-for-managing-naturally-aged-skin-results-from-in-vitro-to-clinical-studies
#6
Céline Rouvrais, Daniel Bacqueville, Patrick Bogdanowicz, Marie-José Haure, Laure Duprat, Christine Coutanceau, Nathalie Castex-Rizzi, Hélène Duplan, Valérie Mengeaud, Sandrine Bessou-Touya
INTRODUCTION: Natural aging of skin tissues, the addition of the cumulative action of the time and radiation exposure result in skin atrophy, wrinkles and degeneration of the extracellular matrix (ECM). The aim of the study was to investigate the beneficial effect of a combination containing retinaldehyde (RAL), delta-tocopherol glucoside (delta-TC) and glycylglycine ole-amide (GGO) and of a dermocosmetic containing the combination. MATERIALS AND METHODS: The protective effect of the combination was assessed through in vitro gene expression of ultraviolet (UV)-irradiated fibroblasts...
2017: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/28201874/noise-induced-and-control-of-collective-behavior-in-a-population-of-coupled-chemical-oscillators
#7
Alberto P Munuzuri, Juan Pérez-Mercader
Synchronization of intercommunicating individual oscillators is an important form of collective behavior used in Nature as a mechanism to face dangers, act collectively and communicate. The involvement of the medium where oscillators exist is an important ingredient. Because of their nature and/or their multiple different components the medium and the environment are often perceived as stochastic relative to the deterministic nature of the individuals at some scale. This injects energy/matter into the system in ways that can enhance or deenhance communication in a stochastic manner...
February 16, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28195478/revisiting-the-chemistry-of-guaiacwood-oil-identification-and-formation-pathways-of-5-11-and-10-11-epoxyguaianes
#8
Loïc Tissandié, Marc Gaysinski, Hugues Brévard, Uwe J Meierhenrich, Jean-Jacques Filippi
Guaiacwood oil from Bulnesia sarmientoi Lorentz ex. Griseb is a common natural ingredient of the perfume industry used in both domestic and luxury fragrances for its highly appreciated woody-rosy odor, as well as its excellent fixative properties. Despite its long and traditional use as a perfume ingredient, guaiacwood oil has not been extensively studied. Thus, the chemical characterization of its constituents by using a full array of GC-hyphenated techniques (GC-MS, GC × GC-MS, and pc-GC) combined with conventional chemical fractionation was undertaken...
February 14, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28192656/toward-an-understanding-of-the-electric-field-induced-electrostatic-doping-in-van-der-waals-heterostructures-a-first-principles-study
#9
Anh Khoa Augustin Lu, Michel Houssa, Iuliana P Radu, Geoffrey Pourtois
Since the discovery of graphene, a broad range of two-dimensional (2D) materials has captured the attention of the scientific communities. Materials, such as hexagonal boron nitride (hBN) and the transition metal dichalcogenides (TMDs) family, have shown promising semiconducting and insulating properties that are very appealing for the semiconductor industry. Recently, the possibility of taking advantage of the properties of 2D-based heterostructures has been investigated for low-power nanoelectronic applications...
February 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28187779/bio-efficacy-of-deltamethrin-based-durable-wall-lining-against-wild-populations-of-anopheles-gambiae-s-l-in-northern-tanzania
#10
Eliningaya J Kweka, Ming-Chieh Lee, Beda J Mwang'onde, Filemoni Tenu, Stephen Munga, Epiphania E Kimaro, Yousif E Himeidan
BACKGROUND: Indoor residual spraying (IRS) is one of the preferred tools used for control of malaria in many settings in the world. However, this control tool still faces challenges that include lack of long lasting active ingredient, limited number of well-trained personal, and need of repeated treatment which increases operational costs and reduces acceptability by residents. As a result there is need to develop and validate other methods which can complement the existing controls. The current study compared the bio-efficacy of durable wall lining (DL) (treated with deltamethrin 265 mg/m(2)) and IRS (with deltamethrin 5% WP at 20 mg/m(2)) on indoor mosquitoes densities and biting behaviour of mosquitoes in comparison with control houses without either DL or IRS...
February 10, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28182702/natural-formulas-and-the-nature-of-formulas-exploring-potential-therapeutic-targets-based-on-traditional-chinese-herbal-formulas
#11
Qianru Zhang, Hua Yu, Jin Qi, Daisheng Tang, Xiaojia Chen, Jian-Bo Wan, Peng Li, Hao Hu, Yi-Tao Wang, Yuanjia Hu
By comparing the target proteins (TPs) of classic traditional Chinese medicine (TCM) herbal formulas and modern drugs used for treating coronary artery disease (CAD), this study aimed to identify potential therapeutic TPs for treating CAD. Based on the theory of TCM, the Xuefu-Zhuyu decoction (XZD) and Gualou-Xiebai-Banxia decoction (GXBD), both of which are classic herbal formulas, were selected for treating CAD. Data on the chemical ingredients and corresponding TPs of the herbs in these two formulas and data on modern drugs approved for treating CAD and related TPs were retrieved from professional TCM and bioinformatics databases...
2017: PloS One
https://www.readbyqxmd.com/read/28174780/shedding-light-on-the-biological-and-chemical-fingerprints-of-three-achillea-species-a-biebersteinii-a-millefolium-and-a-teretifolia
#12
Gokhan Zengin, Abdurrahman Aktumsek, Ramazan Ceylan, Sengul Uysal, Andrei Mocan, Gokalp Ozmen Guler, M Fawzi Mahomoodally, Jasmina Glamočlija, Ana Ćirić, Marina Soković
Representatives of the Achillea genus are widely used as foods or nutraceuticals. Considering the increasing demand for herbal dietary supplements with health promoting effects, the objective of this research was to evaluate the biological and chemical profiles of different extracts (ethyl acetate, methanol and water) obtained from three Achillea species (A. biebersteinii, A. millefolium and A. teretifolia). The antioxidant (free radical scavenging (DPPH and ABTS), reducing power (CUPRAC and FRAP), metal chelating and phosphomolybdenum), enzyme inhibitory (anti-cholinesterase, anti-tyrosinase, anti-amylase and anti-glucosidase) and antimicrobial (antibacterial and antifungal) effects were assessed to investigate their biological profiles...
February 8, 2017: Food & Function
https://www.readbyqxmd.com/read/28168142/electrochemical-alcohol-oxidation-mediated-by-tempo-like-nitroxyl-radicals
#13
REVIEW
Rosaria Ciriminna, Mina Ghahremani, Babak Karimi, Mario Pagliaro
The electrocatalytic oxidation of alcohols mediated by TEMPO-like nitroxyl radicals is an economically and industrially viable method that will shortly find commercial application in the synthesis of valued substances including active pharmaceutical ingredients (APIs), valued natural product derivatives, fine chemicals, and valued nanomaterials.
February 2017: ChemistryOpen
https://www.readbyqxmd.com/read/28161416/production-of-glucosyl-glycerol-by-immobilized-sucrose-phosphorylase-options-for-enzyme-fixation-on-a-solid-support-and-application-in-microscale-flow-format
#14
Juan M Bolivar, Christiane Luley-Goedl, Ernestine Leitner, Thornthan Sawangwan, Bernd Nidetzky
2-O-(α-d-Glucopyranosyl)-sn-glycerol (αGG) is a natural osmolyte. αGG is produced industrially for application as an active cosmetic ingredient. The biocatalytic process involves a selective transglucosylation from sucrose to glycerol catalyzed by sucrose phosphorylase (SPase). Here we examined immobilization of SPase (from Leuconostoc mesenteroides) on solid support with the aim of enabling continuous production of αGG. By fusing SPase to the polycationic binding module Zbasic2 we demonstrated single-step noncovalent immobilization of the enzyme chimera to different porous supports offering an anionic surface...
February 1, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/28158298/administration-of-bovine-casein-derived-peptide-prevents-cognitive-decline-in-alzheimer-disease-model-mice
#15
Li-Juan Min, Yodai Kobayashi, Masaki Mogi, Kana Tsukuda, Akio Yamada, Koji Yamauchi, Fumiaki Abe, Jun Iwanami, Jin-Zhong Xiao, Masatsugu Horiuchi
There is a growing interest in identifying natural food ingredients that may serve to prevent dementia such as that due to Alzheimer disease (AD). Peptides derived from food proteins have been demonstrated to have various physiological activities such as a hypotensive action. Recent findings have indicated possible associations of hypertension with AD progression, and suggest that angiotensin converting enzyme (ACE) inhibitors with potential to pass through the blood brain barrier (BBB) may reduce the risk of AD...
2017: PloS One
https://www.readbyqxmd.com/read/28154328/efficient-preparation-of-ephedrine-alkaloids-free-ephedra-herb-extract-and-its-antitumor-effect-and-putative-marker-compound
#16
Naohiro Oshima
 Ephedra Herb is a crude drug for the treatment of headache, bronchial asthma, nasal inflammation, and the common cold. Although it has been considered that ephedrine alkaloids (EAs) are the principal active ingredients of Ephedra Herb, EAs are known to induce palpitations, hypertension, insomnia, and dysuria as major side effects. Therefore, the administration of EAs-containing drugs to patients with cardiovascular-related diseases is strongly contraindicated. Previously, we isolated herbacetin 7-O-neohesperidoside from Ephedra Herb...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28152355/what-risks-do-herbal-products-pose-to-the-australian-community
#17
Roger W Byard, Ian Musgrave, Garth Maker, Michael Bunce
Traditional herbal products are widely used in Australia to treat a broad range of conditions and diseases. It is popularly believed that these products are safer than prescribed drugs. While many may be safe, it is worrying that the specific effects and harmful interactions of a number of their components with prescription medications is not well understood. Some traditional herbal preparations contain heavy metals and toxic chemicals, as well as naturally occurring organic toxins. The effects of these substances can be dire, including acute hepatic and renal failure, exacerbation of pre-existing conditions and diseases, and even death...
February 6, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28152102/anthelmintic-potential-of-thymoquinone-and-curcumin-on-fasciola-gigantica
#18
Rizwan Ullah, Abdur Rehman, Mohd Faraz Zafeer, Lubna Rehman, Yasir A Khan, M A Hannan Khan, Shahper N Khan, Asad U Khan, S M A Abidi
Fasciolosis an economically important global disease of ruminants in the temperate and tropical regions, caused by Fasciola hepatica and F. gigantica, respectively, also poses a potential zoonotic threat. In India alone it causes huge losses to stakeholders. Anthelmintics including triclabendazole have been used to control this menace but the emerging resistance against the available compounds necessitates identification of novel and alternative therapeutic measures involving plant derived natural compounds for their anthelmintic potential...
2017: PloS One
https://www.readbyqxmd.com/read/28132506/natural-prenylchalconaringenins-and-prenylnaringenins-as-antidiabetic-agents-%C3%AE-glucosidase-and-%C3%AE-amylase-inhibition-and-in-vivo-anti-hyperglycemic-and-anti-hyperlipidemic-effects
#19
Hua Sun, Dong Wang, Xiaotong Song, Yazhou Zhang, Weina Ding, Xiaolin Peng, Xiaoting Zhang, Yashan Li, Ying Ma, Run-Ling Wang, Peng Yu
Inhibition of α-glucosidase and α-amylase decreases postprandial blood glucose levels and delays glucose absorption, making it a treatment strategy for type 2 diabetes. This study examined in vivo and in vitro anti-diabetic activities of natural prenylchalconaringenins 1-2 and prenylnaringenins 3-4, found in hops and beer. 3'-Geranylchalconaringenin (2) competitively and irreversibly inhibited α-glucosidase (IC50 = 1.08 μM) with activity 50-fold higher than acarbose (IC50 = 51.30 μM) and showed moderate inhibitory activity against α-amylase (IC50 = 20...
January 29, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28125353/recent-advances-in-the-utilization-of-natural-emulsifiers-to-form-and-stabilize-emulsions
#20
David Julian McClements, Long Bai, Cheryl Chung
Consumer concern about human and environmental health is encouraging food manufacturers to use more natural and sustainable food ingredients. In particular, there is interest in replacing synthetic ingredients with natural ones, and in replacing animal-based ingredients with plant-based ones. This article provides a review of the various types of natural emulsifiers with potential application in the food industry, including phospholipids, biosurfactants, proteins, polysaccharides, and natural colloidal particles...
January 11, 2017: Annual Review of Food Science and Technology
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