Biological activities

Study on the antagonistic activity against two pathogenic bacteria in humans (Staphylococcus aureus and Streptococcus pneumoniae) of the Streptomyces MIP_L26 (Called MIP_L26), isolated from the soil in the root zone of the May Chang tree; to investigate the biological characteristics of MIP_L26.

6p vipanly 28-10-2024 0 0   Download

Agastache rugosa (Fisch. & C.A.Mey.) Kuntze, a medicinal and ornamental plant in the Lamiaceae family, is mostly found in East Asian countries such as Vietnam, Korea, China, and Japan. All parts of this plant are used as traditional medicines to treat abdominal pain, congestion, chills, diarrhea, nausea, and vomiting, and dispel dampness.

7p viling 11-10-2024 3 0   Download

Composting is a useful waste treatment for environmental problem, but composting experiment is challenging due to large-scale requirement. Thus, laboratory-scale reactor is of interest for composting experiment. The capability of laboratory-scale reactor to simulate large-scale composting was determined by assessing the quality of produced compost via germination index.

6p viling 11-10-2024 0 0   Download

The main components of black ginger (Kaempferia parviflora Wall ex Baker.) show diverse biological effects, especially potential ancancer activity. Thirty-five bioactive compounds were screened for ancancer activity by molecular docking with AutoDock Vina software on VEGFR2 kinase.

10p viling 11-10-2024 0 0   Download

The objective of the present study was to find the changes in physicochemical properties, bioactive compounds, and antioxidant activity of acerola fruits under different cultivars (i.e., Brazilian acerola (Malpighia emarginata D.C) and sour acerola (Malpighia glabra L.)) and maturation stages (unripe, half-ripe, and ripe).

12p vibecca 01-10-2024 3 2   Download

The purpose of this study was to determine the phytochemical compositions and to evaluate the biological activity of the stem bark of Dialium cochinchinense. The phytochemical analysis showed the presence of steroids, terpenoids, anthraquinones, saponins, and phenolics in the stem bark of D. cochinchinense.

14p vibecca 01-10-2024 2 1   Download

The genus Dialium belongs to the Caesalpinioideae family, consisting of approximately 30 species distributed in the tropical regions. Secondary metabolites from the Dialium genus have been reported to exhibit various biological activities including antioxidant, cytotoxicity and antimicrobial activities.

6p vibecca 01-10-2024 3 2   Download

This study aimed to investigate the possibility of degrading the pesticides of the BAC process. Based on the promising results in the full-scale reactor receiving river water, a lab-scale reactor was installed to study the pesticide removal mechanism and the contribution of nitrifying bacteria to the removal efficiency.

13p vifilm 24-09-2024 2 1   Download

The outcomes are to be compared with typical drugs given that compounds are examined against gram-positive and gram-negative strains of bacteria and fungus. Against bacterial strains, products with nitro, methyl, and bromo substituents in the p-position of the benzene ring, as well as products with the nitro group at the m-position, showed very excellent activities against bacterial strains, while compounds with chloro substituent at p-position and m-position demonstrated good activity against the fungal strains Aspergillus niger and Fusarium javanicum.

8p dianmotminh02 03-05-2024 7 2   Download

In this study, an evaluation of the enantioselective of a chiral flavanone with 2'-OH substitution (5,7,2'- trihydroxyflavanone) on ring C was studied by high performance liquid chromatography using the cellulose tris(3,5- dimethylphenyl carbamate)-based stationary phase with n-hexane and iso-propanol doped with 0.1% (v/v) trifluoroacetic acid as a mobile phase.

6p dianmotminh02 03-05-2024 2 2   Download

Alpinia vietnamica H.Ð. Tran, Luu & Skornick was identified as a new species in 2019, which is widely distributed in Thua Thien Hue, Quang Nam, and Kon Tum provinces, Vietnam. The current study wishes to report phytochemical investigation, and the biological activities (cytotoxic, antioxidative, and α-glucosidase inhibitory) of isolated compounds.

5p dianmotminh02 03-05-2024 11 2   Download

Zoanthid is a potential natural resource with many biological activities, such as antioxidant, antiviral, antiinflammatory, and cytotoxic activity. Therefore, this study aimed to evaluate the antioxidant activity of 70% ethanol crude extract and dichloromethane fraction from Zoanthus vietnamensis. The total polyphenol content of ethanol and dichloromethane extracts were 19.36 ± 1.37 and 24.95 ± 0.63 mg GAE/g extract, respectively.

9p dianmotminh02 03-05-2024 7 3   Download

In recent times many research activities have been carried out to prove the metal ion detection ability of Schiff bases. [13,14] In the present study, a new Schiff base has been synthesized from 5-bromo-2- hydroxybenzaldehyde and naphthalene-1,8-diamine and it is complexated with Co(II), Ni(II), Cu(II) and Zn(II) ions. The biological application of all the compounds has been analyzed and metal ions recognition property of the Schiff base has also been studied.

16p dianmotminh02 03-05-2024 8 2   Download

Flavonoids are a diverse group of natural compounds extensively studied in various research articles. They are widely distributed in the plant kingdom and exhibit various biological activities, including antioxidant, antiinflammatory, anticancer, antiviral, and antimicrobial effects. The genus Knema Lour., which contains many species in Southeast Asia, has been traditionally used to treat various ailments. The current review aims to provide a comprehensive update on the isolation of flavonoids and other secondary metabolites from the genus Knema Lour. between 1978 and 2022.

15p dianmotminh02 03-05-2024 10 4   Download

. In vitro biological evaluation revealed the most active compound 4d with an inhibitory concentration of 42.87 μM against K562 and 47.42 μM on A549 cells. The anticancer activity of this naphthylidene isoxazolidinedione derivative was evident by cell cycle and apoptosis assays, which showed arrest of the G2/M phase (65.6%) of the K562 cells and induction of apoptosis with 21.47% apoptotic cells as compared to 0.2% of untreated cells, respectively.

10p dianmotminh02 03-05-2024 7 3   Download

The present study investigated the phytochemical and biological properties of the rhizomes C. aromatica. From the CHCl3 extract of C. aromatic rhizomes, six known compounds, including (-)-hannokinol, (3R,5R)-3,5-diacetoxy-1,7-bis(4- hydroxyphenyl)heptane, naringenin, 2-(4- (hydroxymethyl)phenyl)propan-2-ol, 5-hydroxymethylfurfural, and bisacurone, were isolated. All compounds were tested on the biological inhibitory activities against tyrosinase, αglucosidase, and urease. It was the first time all compounds were isolated from rhizomes of C. aromatica Salisb.

6p dianmotminh02 03-05-2024 4 3   Download

Prunella vulgaris L. (PV) have been reported to have a variety of important biological activities. A process for rosmarinic acid (RA) extraction - antioxidants from PV was performed to obtain the highest extraction yield, strongest antioxidant activity and optimized by a multi-response optimization process.

10p vihulk 28-07-2023 5 1   Download

Municipal wastewater treatment plants generally utilise biological activated sludge processes to remove organic compounds and nitrogen. The biological nitrogen removal (BNR) occurs in two steps, nitrification (ammonium removal) and denitrification (nitrates removal). This study focused on a medium-sized wastewater treatment plant (WTP) which experienced poor nitrification for years, mainly when the weather temperature drops.

125p runthenight07 01-03-2023 7 3   Download

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

The thesis investigates the growth promoting effects of plant growth promoting bacteria (PGPB) in chickpea and wheat. Three main topics covered are: 1) Isolating local Plant Growth Promoting Bacteria; 2) Screening and characterization of isolates; 3) Assessment and identification of the selected strains.

107p runthenight04 02-02-2023 11 4   Download