scholarly journals Development of Genistein Synthesis for Use as a Certified Reference Material

2021 ◽  
Vol 10 (4) ◽  
pp. 20-31
Author(s):  
A. A. Zhigalina ◽  
V. G. Dudarev ◽  
V. V. Tikhonova ◽  
O. Yu. Strelova
Keyword(s):  
Dietary Supplements ◽  
Certified Reference Materials ◽  
Wide Spectrum ◽  
Metrological Traceability ◽  
Pharmacological Action ◽  
Biochanin A ◽  
Pharmaceutical Chemistry ◽  
Mass Selective Detector ◽  
Spectrum Characteristics

Introduction. The use of certified reference materials (CRMs) ensures metrological traceability and comparability of analysis results performed in different laboratories, by different analysts, at different times. Genistein is a promising substance with a wide spectrum of pharmacological action. genistein is widely used in dietary supplements. Development of regulatory documents for CRM of genistein will ensure the quality of drugs and dietary supplements.Aim. Aim of our study is to improve of the ways of synthesis and determination of spectrum characteristics of genistein for the certification of CRM.Materials and methods. We used synthetic genistein, (Ph.D. V. Yu. Kovtun SPC "Pharmzashchita") (sample № 1) and genistein synthesized and studied at the departments of pharmaceutical chemistry and chemical technology of medicinal substances SPCPU (sample № 2). Infrared spectra of genistein samples were collected on an FSM 1201 infrared Fourier spectrometer (OOO Infraspek, Russia) via KBr pellets technique. All the spectra were collected in the 4000–500 cm−1 range. The NMR (1H and 13C) measurements were performed with a BrukerAvance III NMR spectrometer (400 and 100 MHz) (Bruker, Germany) in DMSO-d6 solvent. Raman spectra were recorded by an ORTES-785TRS-2700 analytical Raman scattering system at a laser power of 100 mW (OPTEC JSC, Russia). Laser interaction time was 5, 10, 20 and 60 seconds. The results were processed using the software "BWSpec 4.10_4", USA. GC-MS was performed on an Agilent Technologies 7890A gas chromatograph (Agilent Technologies, USA) with a 7693 autoinjector and a Hewlett Packard 5975C mass selective detector.Results and discussion. The synthesis was carried out according to the developer's method. The stage "removal of the alkyl protection" has been improved. The spectra of the synthesis intermediate of genistein (biochanin A) correspond to the literature data. Samples of genistein were investigated by methods: MC and NMR 13С, 1Н. The structure of the investigated substance was confirmed; Raman and IR spectroscopy showed that the spectra of the samples do not differ from each other and there are no additional signals.Conclusion. The spectrum characteristics of samples of genistein were obtained by NMR, IR and Raman spectroscopy, which will be used in the regulatory documentation for CRM of genistein. All of this will make it possible to control the quality of medicines based on it and to identify substandard dietary supplements.

scholarly journals The problem of improving the quality of seriously issued certified reference materials of the composition of gas mixtures

2019 ◽  
Vol 15 (3) ◽  
pp. 5-13
Author(s):  
L. A. Konopelko ◽  
A. V. Kolobova ◽  
O. V. Fatina
Keyword(s):  
Reference Material ◽  
Reference Materials ◽  
Certified Reference Materials ◽  
Metrological Traceability ◽  
Gas Mixtures ◽  
Measuring Instruments ◽  
Expanded Uncertainty ◽  
Iso Guide 35 ◽  
The Russian Federation

Currently, in the Russian Federation, the metrological traceability of certified reference materials of the composition of gas mixtures in cylinders under pressure produced by manufacturers of certified reference materials is carried out in accordance with GOST 8.578-2014. Considering that certified reference materials of the composition of gas mixtures in cylinders under pressure are used for testing to approye the type of measuring instruments, verification, calibration, and graduation of gas-analytical measuring instruments used to control explosive gases and vapors, harmful components in the atmospheric air and the air of the working area, emissions from vehicles and enterprises, to control technological processes, the quality of hydrocarbon products, etc., the issue of ensuring the quality of seriously produced certified reference materials (about 100.000 cylinders with gas mixtures per year) is important. To ensure the quality of certified reference materials of gas mixtures in cylinders under pressure, mass-produced by manufacturers of certified reference materials, we offer the following actions:– manufacturers of certified reference materials’ passing of mandatory accreditation for compliance with the requirements of GOST ISO Guide 34–2014 and GOST ISO Guide 35–2015;– manufacturers of certified reference materials’ constant participation in the proficiency testing programs through interlaboratory tests;– actualizing and refining the existing set of standards defining the requirements for the entire life cycle of a certified reference material of a gas mixture in a cylinder under pressure;– improving the method of certification of a reference material by calculating the value of the expanded uncertainty of the reference material and the introducting a new coefficient «technological reserve».

scholarly journals Comparison of Label Claims, Measured Curcuminoid Content and Dosage Form Performance Quality With Industry Standards for Turmeric Dietary Supplements

2021 ◽  
Vol 5 (Supplement_2) ◽  
pp. 296-296
Author(s):  
Karen Andrews ◽  
Pavel Gusev ◽  
Sushma Savarala ◽  
Phuong-Tan Tey ◽  
Laura Oh ◽  
...  
Keyword(s):  
Dietary Supplements ◽  
Certified Reference Materials ◽  
Curcuma Longa ◽  
Quality Of Results ◽  
Funding Sources ◽  
Performance Quality ◽  
Industry Standards ◽  
Labeling Requirements ◽  
Soft Gels

Abstract Objectives Turmeric (Curcuma longa) is a popular ingredient in dietary supplements (DS), promoted for a variety of health effects. FDA label regulations require information on the total weight of each botanical or extract present in a botanical DS, unless it is part of a proprietary blend. Information on the concentration of phytochemicals in extracts is voluntary. DS with turmeric rhizome powders and/or extracts were tested for curcuminoid content and the results compared to label claims and industry standards as part of the Dietary Supplement Ingredient Database (DSID) research program. The performance quality of the dosage forms was also evaluated. Methods Commonly consumed DS (n = 54 × 2 lots) with turmeric as the only or primary ingredient were analyzed for curcumin, demethoxycurcumin, and bisdemethoxycurcumin. Certified reference materials, in-house controls and blind sample duplicates were measured to ensure the quality of results from three laboratories. Percentages of total curcuminoids (TC) and ratios of the three curcuminoids were compared to published standards. Voluntary content claims were categorized as “complete” (all listed turmeric ingredients had a TC claim) or “partial” (only one of two had a TC claim). Tablets/caplets (n = 9) and capsules (n = 39) were also tested for disintegration and soft gels (n = 4) for rupture. Results Measured TC amounts varied widely among products. At the most common labeled level of 500 mg of turmeric per day, measured TC results ranged from 16 to 554 mg (n = 12). DS with voluntary claims for TC (n = 41) had analytical content averaging 6.2% above label, and 63% within ± 10% of claims. DS with complete TC claims had significantly higher levels in mg per day than those with partial or no claims (735 ± 87, 137 ± 37, 196 ± 57; mean ± SE, respectively). The curcuminoid ratios and/or the percentages of TC differed significantly from United States Pharmacopeial (USP) standards for at least 10 DS. Most (87.5%) DS passed disintegration tests and all soft gels passed the rupture test. Conclusions Current labeling requirements for turmeric DS may be insufficient to inform researchers and consumers about the actual content of TC in DS because the extract concentrations vary widely. Voluntary claims for TC amounts were reasonably accurate. Most turmeric DS met USP disintegration and composition standards. Funding Sources NIH-ODS and USDA-ARS.

Model and Method for Contributor’s Quality Assessment in Community Image Tagging Systems

2018 ◽  
pp. 45-51
Author(s):  
A. V. Ponomarev
Keyword(s):  
Large Scale ◽  
Wide Spectrum ◽  
Preference Relation ◽  
Pairwise Comparison ◽  
Ground Truth ◽  
Comparison Method ◽  
Characteristic Matrix ◽  
Image Tagging ◽  
Proposed Model

Introduction: Large-scale human-computer systems involving people of various skills and motivation into the information processing process are currently used in a wide spectrum of applications. An acute problem in such systems is assessing the expected quality of each contributor; for example, in order to penalize incompetent or inaccurate ones and to promote diligent ones.Purpose: To develop a method of assessing the expected contributor’s quality in community tagging systems. This method should only use generally unreliable and incomplete information provided by contributors (with ground truth tags unknown).Results:A mathematical model is proposed for community image tagging (including the model of a contributor), along with a method of assessing the expected contributor’s quality. The method is based on comparing tag sets provided by different contributors for the same images, being a modification of pairwise comparison method with preference relation replaced by a special domination characteristic. Expected contributors’ quality is evaluated as a positive eigenvector of a pairwise domination characteristic matrix. Community tagging simulation has confirmed that the proposed method allows you to adequately estimate the expected quality of community tagging system contributors (provided that the contributors' behavior fits the proposed model).Practical relevance: The obtained results can be used in the development of systems based on coordinated efforts of community (primarily, community tagging systems). 

scholarly journals Public Awareness and Disaster Risk Reduction: Just-in-Time Networks and Learning

2008 ◽  
Vol 23 (3) ◽  
pp. 286-288 ◽  
Author(s):  
Ali Ardalan ◽  
Faina Linkov ◽  
Eugene Shubnikov ◽  
Ronald E. LaPorte
Keyword(s):  
Hurricane Katrina ◽  
Wide Spectrum ◽  
Public Awareness ◽  
Just In Time ◽  
Educational Levels ◽  
Hazard And Risk ◽  
Time Required ◽  
Expert Network ◽  
Core Materials

AbstractImproving public awareness through education has been recognized widely as a basis for reducing the risk of disasters. Some of the first disaster just-in-time (JIT) education modules were built within 3–6 days after the south Asia tsunami, Hurricane Katrina, and the Bam, Pakistan, and Indonesia earthquakes through a Supercourse. Web monitoring showed that visitors represented a wide spectrum of disciplines and educational levels from 120 developed and developing countries. Building disaster networks using an educational strategy seizes the opportunity of increased public interest to teach and find national and global expertise in hazard and risk information. To be effective, an expert network and a template for the delivery of JIT education must be prepared before an event occurs, focusing on developing core materials that could be customized rapidly, and then be based on the information received from a recent disaster. The recyclable process of the materials would help to improve the quality of the teaching, and decrease the time required for preparation. The core materials can be prepared for disasters resulting from events such as earthquakes, hurricanes, tsunamis, floods, and bioterrorism.

scholarly journals Survey on the Quality of the Top-Selling European and American Botanical Dietary Supplements Containing Boswellic Acids

Planta Medica ◽  
2016 ◽  
Vol 82 (06) ◽  
pp. 573-579 ◽  
Author(s):  
Jürgen Meins ◽  
Christian Artaria ◽  
Antonella Riva ◽  
Paolo Morazzoni ◽  
Manfred Schubert-Zsilavecz ◽  
...  
Keyword(s):  
Dietary Supplements ◽  
Botanical Dietary Supplements ◽  
Boswellic Acids ◽  
American Botanical

scholarly journals Sirtuin 3 (SIRT3) Pathways in Age-Related Cardiovascular and Neurodegenerative Diseases

Biomedicines ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 1574
Author(s):  
Ciprian N. Silaghi ◽  
Marius Farcaș ◽  
Alexandra M. Crăciun
Keyword(s):  
Neurodegenerative Diseases ◽  
Wide Spectrum ◽  
Metabolic Adaptation ◽  
High Morbidity ◽  
Protective Effects ◽  
Sirtuin 3 ◽  
Age Related ◽  
Genetic Interventions ◽  
Induced Changes

Age-associated cardiovascular and neurodegenerative diseases lead to high morbidity and mortality around the world. Sirtuins are vital enzymes for metabolic adaptation and provide protective effects against a wide spectrum of pathologies. Among sirtuins, mitochondrial sirtuin 3 (SIRT3) is an essential player in preserving the habitual metabolic profile. SIRT3 activity declines as a result of aging-induced changes in cellular metabolism, leading to increased susceptibility to endothelial dysfunction, hypertension, heart failure and neurodegenerative diseases. Stimulating SIRT3 activity via lifestyle, pharmacological or genetic interventions could protect against a plethora of pathologies and could improve health and lifespan. Thus, understanding how SIRT3 operates and how its protective effects could be amplified, will aid in treating age-associated diseases and ultimately, in enhancing the quality of life in elders.

Fatty acid profile, carcass traits and meat quality of Nellore steers following supplementation with various lipid sources

2017 ◽  
Vol 57 (6) ◽  
pp. 1170 ◽  
Author(s):  
Isabela P. C. Carvalho ◽  
Giovani Fiorentini ◽  
Josiane F. Lage ◽  
Juliana D. Messana ◽  
Roberta. C. Canesin ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Dietary Supplements ◽  
Meat Quality ◽  
Linseed Oil ◽  
Statistical Significance ◽  
Average Daily Gain ◽  
Carcass Traits ◽  
Subcutaneous Fat ◽  
Practical Significance

The aim of the present study was to evaluate the fatty acid composition of meat and subcutaneous fat, carcass traits and meat quality of Nellore steers fed diets supplemented with various lipid sources. Forty-five young bulls, with average bodyweight of 441 ± 30 kg, were allotted into 10 paddocks, with five treatments, each consisting of two paddocks. The bulls were randomly assigned into one of the following five treatments, which consisted of four lipid sources: palm oil (PO), linseed oil, rumen protected fat (soybean-based oil), whole soybean, and a control (without additional fat). Trial duration was 120 days, which included 30 days of adaptation. Supplements were offered daily at 10 g/kg bodyweight per day. Dietary supplements for providing additional fat were formulated to consist of 10% ether extract. Lipid sources did not significantly affect the average daily gain (P = 0.797) or dressing percentage (P = 0.663). Supplementation with PO increased the concentrations of lauric acid (P = 0.036) and myristic acid (P < 0.001) in the muscle and subcutaneous fat. Animals supplemented with linseed oil had significantly higher concentrations of conjugated linolenic acid in the meat (P = 0.036) and fat (P = 0.049) than did control animals. In the present study, the use of various lipid sources in dietary supplements of grazing cattle during finishing period did not affect carcass traits or physical attributes of beef. This absence of statistical significance may be related to the minimum number of repeat paddocks (2) per treatment. Thus, differences that can have a practical significance were not evidenced by statistical analysis. The inclusion of PO and protected fatty acids derived from soybean oil (rumen-protected fat) is not recommended as a method to improve the lipid profile of meat and subcutaneous fat of Nellore cattle.

Issues of pharmaceutical specialist admission to work

2021 ◽  
pp. 76-80
Author(s):  
Tatiana L. Moroz ◽  
Olga A. Ryzhova
Keyword(s):  
Pharmaceutical Chemistry ◽  
Staff Turnover ◽  
Occupational Structure ◽  
Quality Of Work ◽  
Resident Physicians ◽  
Pharmaceutical Technology ◽  
Irkutsk Region ◽  
The Right

A study was carried out to identify differences in training of resident physicians in the specialties: Management and Economics of Pharmacy, Pharmaceutical Technology, Pharmaceutical Chemistry and Pharmacognosy and under the specialist’s program Pharmacy and to explore the possibilities of granting pharmacy workers the right to transit from one specialty to another without compulsory completion of residency. The urgency of this article is associated with a large number of issues that are being faced by pharmacists who transit from one specialty to another.An analysis of the age and occupational structure of pharmacists improving their qualifications (2300 people) was conducted in the Irkutsk region and the Trans-Baikal Territory. The results of the study showed that it seems like a good idea not to associate the transition from one specialty to another with the obligatory completion of residency, but to provide an admission to work as a pharmacist-technologist after initial accreditation, taking into account the specifics of the work of pharmaceutical specialists in pharmacies, the need to ensure the interchangeability of workers and reduce staff turnover without falling off in quality of work.

Zastosowanie kwasu azelainowego w wybranych schorzeniach dermatologicznych

2018 ◽  
Vol 21 (4) ◽  
Author(s):  
Paula Dębek ◽  
Anna Piotrowska ◽  
Magdalena Nastałek ◽  
Natalia Totko-Borkusiewicz ◽  
Olga Czerwińska-Ledwig ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Clinical Trials ◽  
Mechanism Of Action ◽  
Azelaic Acid ◽  
Acid Treatment ◽  
Wide Spectrum ◽  
Acne Vulgaris ◽  
Acne Rosacea

Introduction. Dermatoses, such as acne vulgaris, acne rosacea and hyperpigmentations, are an increasingly common problem, their chronic character affecting the quality of life of the affected people. One of the substances with a multidirectional mechanism of action and a wide spectrum of applications is azelaic acid. Aim. The aim of this paper was to present azelaic acid as a substance suitable for treatment of many skin problems. Material and methods. The authors have analyzed the literature from 1986-2018, looking for works indicating the mechanism, effectiveness and safety of azelaic acid treatment in selected diseases. Results. This ingredient proved to meet the high requirements. Conclusions. Systematic use of azelaic acid reduces acne lesions, lightens discolorations and eliminates most of the symptoms of rosacea. It is used alone or in polytherapy, however combined therapies require further clinical trials indicating the directionality of such treatment.

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