In this study, responses of rice under drought stress correlating with changes in chemical compositions were examined. Among 20 studied cultivars, Q8 was the most tolerant, whereas Q2 susceptible to drought. Total phenols, total flavonoids, and antioxidant activities, their accumulation water deficit conditions proportional resistance levels rice. detail, phenols flavonoids (65.3 mg gallic acid equivalent (GAE) 37.8 rutin (RE) significantly higher than (33.9 GAE/g 27.4 RE/g, respectively)...

The fruits of Canarium tramdenum are commonly used as foods and cooking ingredients in Vietnam, Laos, the southeast region China, whilst leaves traditionally for treating diarrhea rheumatism. This study was conducted to investigate potential use this plant bark antioxidants, α-amylase α-glucosidase inhibitors. Five different extracts C. (TDB) consisting extract (TDBS) factional hexane (TDBH), ethyl acetate (TDBE), butanol (TDBB), water (TDBW) were evaluated. TDBS contained highest amount...

In this study, different plant parts (barks, flowers, inner skins, kernels and leaves) of Castanea crenata (Japanese chestnut) were analyzed for total phenolic, flavonoid, tannin contents. Antioxidant properties evaluated by using 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS), reducing power, β-carotene bleaching methods. The highest phenolic contents found in the skins (1034 ± 7.21 mg gallic acid equivalent/g extract...

Phalaenopsis spp. is the most commercially and economically important orchid, but their plant parts are often left unused, which has caused environmental problems. To date, reports on phytochemical analyses were available endangered medicinal orchids. The present study was conducted to determine total phenolics, flavonoids, antioxidant activity of ethanol extracts prepared from leaves roots six commercial hybrid Leaf "Chian Xen Queen" contained highest phenolics with a value 11.52 ± 0.43 mg...

Momilactones A (MA) and B (MB) are the active phytoalexins allelochemicals in rice. In this study, MA MB were purified from rice husk of Oryza sativa cv. Koshihikari by column chromatography, purification was confirmed high-performance liquid thin-layer gas chromatography-mass spectrometry, chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS), ¹H 13C nuclear magnetic resonance analyses. By vitro assays, both exerted potent inhibition on α-amylase α-glucosidase activities. The...

Abstract In recent decades, phenolic compounds derived from plants have been considered as potential weed inhibitors due to their environmentally friendly properties, which are profitable regarding sustainable development targets. While experiments indicated that exhibited significant inhibition on weeds via various biological pathways, none of these natural efficiently applied in practical agricultural production. This paper provides an overview the allelochemicals (and plant sources)...

This study assessed the energy potential, economic feasibility, and environmental performance of landfill gas (LFG) recovery, incineration, anaerobic digestion (AD) technologies for Phnom Penh municipality in Cambodia, from 2023 to 2042. The analysis utilized levelized cost electricity (LCOE), payback period (PBP), net present value (NPV) evaluate feasibility each technology. Additionally, was following IPCC 2006 guidelines. results indicate that incineration produced highest output, ranging...

This paper reports the successive isolation and purification of bioactive compounds from stem bark Jatropha podagrica, a widely known medicinal plant. The ethyl acetate extract exhibited strongest antioxidant activity assessed by 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical scavenging, ferric reducing power (FRAP) assays (IC50 = 46.7, 66.0, 492.6, respectively). By column chromatography (CC) with elution hexane at 8:2, 7:3, 6:4...

Essential oils (EOs) of Clausena indica fruits, Zanthoxylum rhetsa and Michelia tonkinensis seeds were analyzed for their phytochemical profiles biological activities, including anti-diabetes, anti-gout, anti-leukemia properties. Sixty-six volatile compounds identified by gas chromatography-mass spectrometry (GC-MS), in which, myristicin (68.3%), limonene (44.2%), linalool (49.3%) the most prominent components EOs extracted from C. indica, Z. rhetsa, M. tonkinensis, respectively. In...

This study was conducted to determine the correlation between of salinity stress on growth and phenolic compounds in rice. It observed that caused a significant decrease shoot lengths, fresh dry weights all rice varieties. Under stress, changes chemical contents also differed among cultivars. Total phenolics flavonoids, vanillin protocatechuic acid tolerant varieties were strongly increased, whereas contrast, they markedly reduced susceptible cultivar. Ferulic p -coumaric detected only...

This study was the first to detect presence of two compounds momilactone A (MA) and B (MB) in rice bran using liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS). By vitro assays, both MA MB exhibited potent inhibitory activities on pancreatic α-amylase α-glucosidase which were significantly higher than γ-oryzanol, a well-known diabetes inhibitor. Remarkably, indicated an effective inhibition trypsin with IC

Background:Clausena indica fruit is commonly used for food ingredients and traditional medicines in tropical countries, however, information about its biological activities chemical profiles has been inadequately reported. Methods: In this study, a bio-guided fractionation of antioxidants α-amylase inhibitors from hexane (MH) ethyl acetate (ME) extracts C. (pericarp seed) was carried out. Eleven fractions MH (D1-D11) 17 ME (T1-T17) were obtained column chromatography over silica gel, which...

We previously reported the inhibitory potentials of momilactones A (MA) and B (MB) against key enzymes related to type 2 diabetes obesity. In this study, antioxidant anti-skin-aging activities MA MB were investigated compared with tricin, a well-known antiaging flavonoid in rice. MA, MB, tricin purified from rice husk by column chromatography their biological subsequently assayed vitro trials. The contents different commercial cultivars Japan quantified confirmed ultra-performance liquid...

Rice husk has been exploited as a potential source of allelochemicals. In this study, four bioactive compounds including momilactone E (ME), 7-ketostigmasterol (7KS), A (MA), and B (MB) were isolated by column chromatography (CC) to yield 2.7, 0.3, 11.7, 8.3 mg/kg rice husk, respectively. The structures the identified confirmed spectroscopic techniques consisting 1H 13C nuclear magnetic resonance (NMR), electrospray ionization mass (ESI), high-resolution spectrometry (HR-MS) infrared...

This study was conducted to develop the salt tolerance of rice by exogenous application magnesium sulfate supplement (MgSO4). The salinization carried out on 7-day-old seedlings including BC15 (salinity tolerant) and DT84DB susceptible) varieties with 0.5 mM MgSO4. MgSO4 significantly improves growth both varieties. In addition, antioxidant activities increase in line raise total phenolic flavonoid contents. Remarkably, contents momilactone B (MB) compounds tricin, ρ-coumaric, salicylic,...

This is the first investigation, conducted in a completely randomized design (CRD), to determine effects of different salinity levels (75 and 150 mM) germination periods (3, 4, 5 days) on momilactone phenolic accumulations germinated brown rice (GBR) var. Koshihikari. Particularly, identification bioactive compounds was confirmed using electrospray ionization-mass spectrometry (ESI-MS) nuclear magnetic resonance (NMR) spectroscopy (1H 13C). Momilactone A (MA) B (MB) amounts were determined...

Piper methysticum (kava) root is known to possess promising weed suppressing activity. The present study was conducted search for potent plant growth inhibitors from the of this medicinal pepper plant. ethyl acetate (EtOAc) extract exhibited strongest reduction on Raphanus sativus (radish) (IC50 shoot and = 172.00 51.31 µg/mL respectively) among solvent extracts. From active extract, nine involved in inhibitory activities P. were isolated, purified characterized by column chromatography...

This research was conducted to exploit the waste of used plant parts from widely marketed moth orchid cultivar (

Andropogon virginicus is an invasive weed that seriously threatens agricultural production and economics worldwide. In this research, dried aerial parts of A. were extracted, applying Soxhlet liquid-liquid phase methods to acquire the total crude (T-Anvi), hexane (H-Anvi), ethyl acetate (E-Anvi), butanol (B-Anvi), water (W-Anvi) extracts, respectively. which, T-Anvi contains highest phenolic flavonoid contents (24.80 mg gallic acid 37.40 rutin equivalents per g dry weight, respectively). Via...