Bioactive compounds
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In order to explore the importance of the Antheroporum genus in pharmaceutical applications, two bioactivities of A. harmandii plant extracts have been evaluated in this study. Antimicrobial and antioxidant activities of A. harmandii extracts will provide evidences for further chemical composition studies to detect new bioactive compounds from this species.
9p dianmotminh02 03-05-2024 5 2 Download
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The methanol extracts as well as some compounds from this plant exhibited anti-inflammatory, antimicrobial activity, antioxidant, hepatoprotective and anti-cancer effect, and antiosteoporotic. On going to search for bioactive components from the Vietnamese plant, this paper reported the isolation of seven phenolic compounds including one new from the aerial parts of A. ilicifolius. The cytotoxic activity of the isolates against two cancer cell lines (HepG2 and SK-LU1) were also screened and reported herein.
5p dianmotminh02 03-05-2024 7 2 Download
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This thesis documents a research program in which Australian grown Danshen extracts and related bioactive compounds have been demonstrated to be effective in scavenging free radicals, namely ROS generation, in a cell free system and NADPH oxidase derived superoxide (O2-) generation in vascular tissue (rat aorta). Danshen extracts, both aqueous and ethanol, and their active compounds (Tanshinone IIA, Salvianolic Acid B and Danshensu) demonstrated anti-oxidant activity however findings exhibited stronger activity in a cell free system than in the aortic vascular tissue.
138p runthenight07 01-03-2023 8 2 Download
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Master's thesis of Science "Investigation into the modulation of circadian clock proteins by dietary compounds and small molecules" is structured as follows: Chapter 1 Introduction; Chapter 2 Identification of novel bioactive compounds from Olea europaea by evaluation of chemical compounds in the OliveNetTM library: in silico bioactivity and molecular modelling, and in vitro validation of hERG activity; Chapter 3 Modulation of circadian core clock proteins by dietary compounds; Chapter 4 Molecular mechanisms of action of selected olive phenolics against epigenetic modifiers and the structur...
235p runthenight04 02-02-2023 3 2 Download
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Master's thesis of Science "Analysis of coffee-herbal beverages for potential benefits against dementia diseases" is structured as follows: Chapter 1: Introduction; Chapter 2: Coffee herbal bioactive compound’s potential to prevent dementia; Chapter 3: The analysis of coffee herbal beverages; Chapter 4: Coffee herbal beverage sensory estimation; Chapter 5: Conclusions and further work; Appendix 1: Herbal coffee beverage sensory analysis evaluation.
100p runthenight04 02-02-2023 3 3 Download
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Fractions yielded from Phellinus gilvus fruiting bodies by liquid-liquid partition of methanol extract contained various bioactive compounds such as phenolics, flavonoids and terpenes. Butanol, water and ethyl acetate fractions had large amount of phenolics, 158.12 - 247.31 mg of gallic acid equivalents (GAE)/g and low amount of flavonoids, 21.74 - 36.05 mg of quercetin equivalents (QE)/g.
9p vimelindagates 18-07-2022 10 3 Download
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The objectives of the thesis: Isolation and determination of chemical structures of the isolated compounds from the leaves of Excoecaria agallocha L. and Excoecaria cochinchinensis Lour.; studied the cytotoxic, anti-inflammatory, and antimicrobial activities of the isolated compounds to find the bioactive compounds.
27p closefriend09 16-11-2021 26 3 Download
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Enhance and improve the bioavailability of the bioactive compounds in garlic through the processing of garlic products (black garlic and lactic acid bacteria fermentation garlic) and nanotechnology.
42p gaocaolon12 18-06-2021 15 4 Download
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Objectives of the study: Survey of biological activity of alkaloid isolated from hairy roots of E.longifolia to find new activities. Determining optimal culture conditions for E.longifolia hairy roots to grow and develop. Determining the concentration of three elicitors (Salicylic acid, Jasmonic acid and Yeat extract) on the production and accumulation of alkaloids isolated from hairy roots of E.longifolia in vitro.
26p extraenglish 24-05-2021 29 4 Download
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The aim of the thesis: Study on chemical constituents of two Knema species including Knema pachycarpa and Knema saxatilis growing in Vietnam. Evaluate cytotoxic and cetylcholinesterase enzyme inhibitory activitiesof isolates to find out bioactive compounds.
25p extraenglish 24-05-2021 18 3 Download
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With the aim of searching for bioactive compounds from plants of the genus Garcinia in order to contribute to the scientific basis for further research in the pharmaceutical field, the thesis focuses on studying two species of the genus Garcinia is Garcinia cowa and Garcinia hanburyi.
27p capheviahe27 23-02-2021 12 4 Download
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The aim of the thesis: Study on chemical constituents of two Tacca species including Tacca vietnamensis and Tacca chantrierri growing in Vietnam; evaluate cytotoxic and inflammatory activities of isolates to find out bioactive compounds.
27p capheviahe27 23-02-2021 22 3 Download
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Study on chemical constituents of two Knema species including Knema pachycarpa and Knema saxatilis growing in Vietnam; evaluate cytotoxic and cetylcholinesterase enzyme inhibitory activitiesof isolates to find out bioactive compounds.
25p capheviahe26 25-01-2021 18 4 Download
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Study on chemical constituents of leaves of two Vitex species including Vitex limonifolia Wall. ex C.B.Clarke and Vitex trifolia L. growing in Vietnam; evaluate anti-inflammatory and antiviral activities of isolates to find out bioactive compounds.
27p larachdumlanat129 20-01-2021 26 4 Download
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Based on the above scientific bases and arguments, I conduct a research project to search for bioactive alkaloids while also researching new activities from alkaloids, thereby increasing cumulative growth culture. Content of alkaloids by adding elicitors.
26p larachdumlanat129 20-01-2021 31 4 Download
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The phytochemical analysis and antibacterial and antioxidant activity of Ardisia silvestris extracts were carried out. The bioactive compounds of Ardisia silvestris leaves were extracted with petroleum ether, ethyl acetate, ethanol and water by immersion and microwave method. The DPPH method was used to determine the antioxidant activity of Ardisia silvestris extracts.
8p larachdumlanat129 19-01-2021 17 3 Download
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Response surface methodology was applied to optimize the extraction of phenolic compounds from fresh Pouzolzia zeylanica plant using hot water as a solvent. A central composite design (CCD) in form (23+star) was used to investigate the effects of two independent variables, namely, extraction temperature (70 to 90oC) and extraction time (20 to 40 min).
10p larachdumlanat129 19-01-2021 19 2 Download
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Usnic acid isolated from lichen was a potential bioactivity compound. It has a broad spectrum bioactivity, including antiviral, anti-inflammatory, anticancer… However, low solubility in water limited its application. Many researchs have done to overcome the restriction. Recent results showed that usnic acid derivatives bearing triazole, enamine, pyrazole and benzylidene groups had strong antiviral and anticancer activities. Thus, investigation of usnic acid derivatives synthesis was an attractive aspect due to the diversity of bioactivities of usnic acid derivatives.
8p larachdumlanat127 02-01-2021 5 1 Download
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The methanol extract of P. palatiferum (Nees) Radlk. leaves exhibited a moderate inhibitory effect on the L-3,4-dihydroxyphenylalanine (L-DOPA) oxidase activity of tyrosinase in the melanin biosynthesis pathway. Further study may lead to new bioactive compounds from ethyl acetate and n-hexane fractions.
11p tamynhan5 10-12-2020 28 2 Download
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In this study, methanolic extracts from the stems, leaves and flowers of Ipomoea pes-caprae that were collected in Xuan Thuy National Park were evaluated for their antibacterial and antioxidative activities, and their ability to inhibit plant growth. The DPPH free radical scavenging activity of crude methanol extracts was evaluated.
7p tamynhan8 04-11-2020 16 1 Download