Phytochemicals

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  • (BQ) Part 1 book "Satureja - Ethnomedicine, phytochemical diversity and pharmacological activities" presents the following contents: Introduction; satureja - Ethnopharmacology and ethnomedicine; micromorphological characterizations, phytochemical contents.

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  • This study aims to evaluate phytochemical constituents and antioxidant, antimicrobial, tyrosinase inhibitory activities and sunscreen function of various extracts from Pandanus tectorius.

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  • Lichens are fungal and algal/cyanobacterial symbioses resulting in the production of specific metabolites with a great variety of effects such as antibiotic, antimycobacterial, antiviral, anti-inflammatory, analgesic, antipyretic and antiproliferative. As a part of searching cytotoxic compounds from lichens, a phytochemical investigation was conducted on a squamulose lichen, Stereocaulon evolutum Graewe, collected in France.

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  • B-Sitosterol, stigmasterol and a minor compound 5,6-dehydrokawain were isolated from the ethanol extract of the rhizomes of Alpinia globosa, a medicinal plant of Vietnam. The paper provides characteristic spectra and HPLC profile of the natural -pyrone 5,6- dehydrokawain that would be useful for the purpose of fast determination of this bioactive compound in plant extracts.

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  • Phytochemical analysis of the leaves of Aglaia gigantea, Aglaia dasyclada and Aglaia oligophylla collected in Vietnam yielded three terpenoids, which included two triterpene Foveolin B (1), Niloticin (2) and one tetraterpene Lutein (3). The structures of these compounds were elucidated through extensive 1D and 2D NMR spectroscopy and analysis of their mass spectrometric data.

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  • (BQ) Part 2 book "Satureja - Ethnomedicine, phytochemical diversity and pharmacological activities" presents the following contents: Biological and pharmacological activity, satureja bachtiarica - Phytochemistry and pharmacology, discussion and conclusion.

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  • In the search for bioactive constituents from Vietnamese plants, the leaves and stems of Callistemon citrinus (Curtis) Skeels were selected for chemical investigation. Phytochemical analysis of plant led to the isolation of eight phenolic compounds including two flavonoids (eucalyptine (1) and 8-demethyleucalyptine (2)), two alcohols (blumenol A (3), ntetratriacontanol (4)), three benzoic acid derivatives (acid gallic (5), methyl gallate (6) protocatechuic acid (7)), one sterol (β-sitosterol (8)), and along with one sesquiterpene (2,6,10- bisabolatriene (9)).

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  • The phytochemical investigation of the ethyl acetate extract of Pinus kesiya Royle ex Gordon roots led to the isolation of two abietane diterpenes, 7-oxo-15-hydroxy-dehydroabietic acid (1) and dehydroabietic acid (2) as well as two neolignans, cedrusin (3) and cedrusin-4-O-β-D-glucopyranoside (4). Their structures were determined by combination of spectral analysis and comparison with reported data. Among them, compound 1 was isolated from the genus Pinus for the first time.

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  • The phytochemical investigation of the hexane extract from the twigs and leaves of Dacrycarpus imbricatus (Blume) de Laub led to the isolation of a rare sesquiterpene, spathulenol (1) along with three diterpenes named pimaric acid (2), trans-communic acid (3) and cis-communic acid (4). Their structures were determined by combination of spectral analysis and comparison with reported data. This is the first report on isolation of compound 1 from the Podocarpaceae family.

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  • Ruellia tuberosa L. is a folk remedy, which is used in the treatment of diabetes mellitus, antiinflammation and diuretic agent. However, its α-glucosidase inhibitory activity has not been investigated so far. In the present study, the antidiabetic activitiesof the hexane, ethyl acetate and methanol fraction of crude ethanolic extract of this plant were investigated.

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  • The effects of genotype and altitude of the growing location on physical, chemical, and phytochemical properties of strawberry fruits were investigated. Eight strawberry genotypes obtained from diverse breeding programs were selected.

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  • The objective of this study is to determine the sugar, organic acid, and carotenoid content of Crimson Tide watermelons grafted onto bottle gourd genotypes collected from the Mediterranean region of Turkey. The experiment was carried out during the 2008 and 2009 growing season.

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  • Azadirachta indica A.Juss. and Melia azedarach L. are 2 closely related species from Meliaceae that are considered noteworthy medicinal plants in the world and have very often been confused with each other.

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  • Bài giảng Thực phẩm chức năng gồm 10 chương với các nội dung: khái quát về thực phẩm chức năng, chất xơ thực phẩm, đường có carbohyrate thấp, vitamin, chất khoáng, men vi sinh, acid béo không no đa nối đôi, Acid amin, peptide, protein sinh học, Phytochemical - thực vật sinh học, phát triển sản phẩm TPCN tại Việt Nam.

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  • Rau quả có màu xanh đậm, vàng hoặc đỏ là nguồn cung cấp chất chống oxy hoá và ngăn chận ung thư quan trọng Điều may mắn là thiên nhiên đã có sẳn một cơ chế để kềm hảm sự phảt triển của những gốc tự do. Đó là những chất chống oxy hoá được cung cấp từ các loại rau quả và ngủ cốc trong tự nhiên. Có hàng ngàn chất chống oxy hoá khác nhau. Chúng thuộc 2 nhóm chính, nhóm flavonoids và nhóm phytochemicals....

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  • Quá nhiều lợi ích cho sức khoẻ từ quả cam Bạn thường ăn cam để bổ sung cho cơ thể một lượng vitamin C dồi dào? Hơn thế, trái cam có thể mang lại rất nhiều những lợi ích khác mà bạn không ngờ tới. Cam là loại quả rất giàu chất chống oxy hóa và chất phytochemical. Theo các nhà khoa học Anh: “Bình quân trong một trái cam có chứa khoảng 170 mg phytochemicals bao gồm các chất dưỡng da và chống lão hóa”.

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  • Funneling basic chemical, preclinical, and clinical data into a descriptive form useful to health care professionals, researchers, and educated, health-conscious consumers, Encyclopedia of Dietary Supplements presents peer-reviewed, objective entries that rigorously examine the most significant scientific research. It presents evidence-based information on the major vitamin and mineral micronutrients, single herbs and botanicals, phytochemicals, and other bioactive preparations.

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  • In contrast to other animals, humans sense their world chiefly by vision, sound, and touch. We have, in general, a remarkably undeveloped sense of smell, and so it is not surprising that we fail to appreciate how important chemical signals are in the lives of other organisms. Chemical signals and cues serve insects in numerous ways, including sexual advertisement, social organization, defense, and finding and recognizing resources.

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  • Rau mầm dễ tiêu hóa, có nhiều vitamin, chất khoáng hữu cơ, axit amin, chất đạm, các enzym có ích, và các chất phytochemical, do các chất này cần thiết để cho cây mới nảy mầm có thể phát triển. Các chất dinh dưỡng này rất quan trọng đối với sức khỏe con người.

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  • Representing one of the most important lifestyle factors, diet can strongly influence the incidence and onset of cardiovascular disease and neurodegenerative disorders. Recent dietary intervention studies in several mammalian species, including humans, with flavonoid-rich foods, in particular Vitis vinifera (grape), Camellia sinensis (tea), Theobroma cacao (cocoa), and Vaccinium spp. (blueberry), have indicated an ability of these dietary components to improve memory and learning.

    pdf474p hoangnh76 16-07-2013 66 20   Download

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