Natural Products Isolation

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  • Natural product isolation, initial and bulk extraction, supercritical fluid extraction, an introduction to planar chromatography, crystallization in final stages of purification,... As the main contents of the document "Natural Products Isolation". Invite you to consult for additional documents for the academic needs and research.

    pdf529p nguyenhongchung 25-11-2015 62 5   Download

  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Anti-cancer natural products isolated from chinese medicinal herbs...

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  • Natural products are structurally and biologically interesting metabolites, but they have been isolated in minute amounts. The syntheses of such natural products help in obtaining them in bulk amounts. The recognition of microbial biotransformation as important manufacturing tool has increased in chemical and pharmaceutical industries. In recent years, microbial transformation is increasing significantly from limited interest into highly active area in green chemistry including preparation of pharmaceutical products.

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  • Pseudomonas aeruginosa is considered as the epitome of an opportunistic pathogens of hospitalized patients. A total of 159 clinical specimens were recovered and molecular identified by PCR assay. The number of isolates which identified as P. aeruginosa was 101 clinical isolates. Considering the effect of 14 natural products/extracts on some virulence factors of MDR isolates, sub inhibitory concentration (½ MIC) of Syzygium aromaticum (clove) buds extract inhibit the activity of alkaline protease enzyme on skimmed milk agar.

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  • Marine fungi have become an important source of bioactive natural products. The present study was concerned with the screening of antimicrobial activity from 73 fungal strains isolated from various marine habitats collected from five different localities at the Son Tra Peninsula, Da Nang, Vietnam.

    pdf6p jangni 16-04-2018 14 0   Download

  • As early as the middle of the 19th century, scientists were beginning to isolate and characterize organic compounds from nature. Modern studies of the nature of natural products, those compounds not involved in primary metabolic processes, began in the 1930s and 1940s. In the decades that followed, scientists began to focus on why organisms produce these compounds.

    pdf592p 951628473 07-05-2012 75 21   Download

  • Carbohydrate Biotechnology Protocols is aimed at those newcomers who have an interest in the production and use of carbohydrate materials, but have shied away from involvement for lack of detailed descriptions of appropriate methods, including the type of practical hints that may be provided by those skilled in those methods, but that are rarely described in research papers.

    pdf419p quang93l 30-03-2014 83 15   Download

  • Seventeen strains of endophytic fungi have been isolated from three species of Vinca plants - V. minor, V. erecta and V. rosea collected from different areas of Uzbekistan. These endophytic fungi represented different genera and were screened for vinca alkaloids production. Out of the seventeen endophytic fungal cultures screened, extracts of 5 strains contain compounds of alkaloid nature (vinblastine and vincristine).

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  • Diabetes is a common metabolic disorder characterized by abnormally increased plasma glucose levels. Postprandial hyperglycemia plays an essential role in development of type 2 diabetes. Inhibitors of carbohydrate-hydrolyzing enzymes such as α-amylase retard the liberation of glucose from dietary complex carbohydrates and delay the absorption of glucose. The purpose of the study was to isolate and select α-amylase inhibitor-producing endophytic fungi from wellknown medicinal plants used in the treatment for diabetes and inhabiting in Uzbekistan.

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  • The Aspergillus fungi have been an important source of natural products that are useful for exploration in medicine, agriculture and industry. In our continuous investigation to search for new antimicrobial agents from marine-derived fungi, one new phomaligol A2, together with three known compounds, wasabidienone E, aspertetranone D and mactanamide, were obtained from the EtOAc extract of the culture medium of the marine-derived fungus Aspergillus flocculosus (A. flocculosus) 01NT.1.1.5 isolated from the sponge Stylissa sp. at Nhatrang Bay, Vietnam.

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  • The discovery of a new drug is a challenging task that includes (a) identifica- tion of a biochemical target for certain diseases and (b) screening of a large number of compounds from libraries of compounds arising from synthetic chemistry, combinatorial chemistry, and natural product isolation for lead gen- eration. The lead compound is then optimized based on biological activity, selectivity, pharmacokinetic property, and metabolism.

    pdf29p bigbaby87 03-09-2010 83 19   Download

  • During the years surrounding the new millennium, the field of vibrational optical activity (VOA), comprised principally of vibrational circular dichroism (VCD) and vibrational Raman optical activity (ROA), underwent a transition from a specialized area of research that had been practiced by a handful of pioneers into an important newfield of spectroscopy practiced by an increasing number of scientists worldwide. This transition was made possible by the development of commercial instrumentation and software for the routine measurement and quantum chemical calculation ofVOA.

    pdf388p hotmoingay 03-01-2013 34 5   Download

  • Ian and Jane Campbell of Barambah Organics near Murgon in Queensland produce, process and market certified organic milk. Their movement into organic production was born from a long family interest in sustainable agriculture and the need to create a point of difference for their products. “Customers are often surprised by the unique taste of our milk. It comes from a balanced and healthy diet for the cows on our chemical-free broadacre pastures,” said Ian. Soil health and weed control are important considerations and are carefully managed with compost manures and lime.

    pdf10p cao_can 02-01-2013 50 4   Download

  • The marine environment is an extremely complex ecosystem and contains a broad spectrum of fungal diversity. Marine fungi have been shown to be tremendous sources for new and biologically active secondary metabolites. The present study aims to isolate and screen antimicrobial properties of 100 fungus strains from different marine sources including seaweeds, soft corals, sponges and sediment collected at Nha Trang Bay, Vietnam.

    pdf7p viathena2711 08-10-2019 11 0   Download

  • Bixa orellana commonly known as annatto is one of the oldest known natural dye yielding plants native to Central and South America. Various parts of annatto have been widely used in the traditional medical system for prevention and treatment of a wide number of health disorders. The plethora of traditional uses has encouraged researchers to identify and isolate phytochemicals from all parts of this plant.

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  • There are many researches on the role of pesticides used in agricultural applications in the ecosystem. However, detailed research on microbial flora, especially for metabolic activity products, has not been found. Therefore, in our study the effect on microbial flora of natural pesticide, bordeux mixture used in the control of plant harmful and diseases in agricultural applications was evaluated in terms of production of EPS and siderophore.

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  • Pigments play a very significant role in all aspects of life. They find application in a variety of industries like food industries, textile industries, pharmaceutical industries etc. One of the major reasons behind the increasing market interest for microbial pigments is their eco-friendly nature and their compatibility with the living. Besides this, they also reported to impart many additional benefits due to their anti-bacterial, anti-oxidant, antimalarial and anti-biotic properties etc.

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  • The emergent and rapid spread of carbapenem-resistant A. baumannii isolates poses a severe threat to public health. Thus, the growing interest in new therapies based on natural products is the basic and primary source for the emergence of new antimicrobials. The aim of this study was to evaluate the antimicrobial activity of cinnamaldehyde against carbapenem-resistant A. baumannii nosocomial strains (n=47) isolated from patients in four teaching hospitals at Ceará, Brasil.

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  • Beneficial plant-growth-promoting bacteria (PGPB) have been reasonably applied to rescue crucial issue for agriculture by salinity soil. Observed most of PGPB was found in endophyte, rhizosphere and soil. Indole acetic acid (IAA)-producing bacteria could naturally stimulate and facilitate plant growth. The knowledge of IAA production and content of bacteria resident in the marine environment has been typically insufficient and limited to date.

    pdf13p 12120609 23-03-2020 4 0   Download

  • Natural microflora of three Dadih products from Lembah Gumanti District, Solok Regency, West Sumatra has been analyzed and compared. Dadih (Dadiah: in Minangkabau dialect) is well known as an original and typical traditional food of West Sumatra. Dadih is fermented milk product made from water buffalo milk in a bamboo tubes. The study was purposed to analyze the composition of acid fermentative and proteolytic bacteria in dadih, to compare the character of the potential acid fermentative isolate as a probiotic candidate, to determine the pathogenicity of the isolates.

    pdf13p trinhthamhodang1212 06-04-2020 2 0   Download


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