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269 articles for “leaves”
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Research ArticleOpen accessEvery word in the titleQualitative Analysis of the Chemical Composition of Cinnamomum tamala leaves and Biological ActivityQianwen Gong, Pin Chen, Linyang Wang, Shuge TianCinnamomum tamala (Buch.-Ham.) Nees and Ebermaier. (Lauraceae) is a less explored medicinal plant in Uyghur medicine, with limited knowledge about its non-volatile compounds. We utilized chemical pre-screening in conjunction with UPLC-Q-Orbitrap-MS to analyze the phytochemical makeup of C. tamala leaves. Total polyphenols were measured using the Folin-Ciocalteu method, while total flavonoids were quantified through NaNO2-Al (NO3)3 colorimetric analysis across four … …American Journal of Biochemistry and Biotechnology, Vol. 22, Issue 3 · 21 Sep 2026 · 659 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleUltrasonic Microwave Assisted Extraction, Chemical Characterization and Antioxidant Activity of Polysaccharides from Fig LeavesBaikangzhe Zheng, Yang Miao, Yi Zhou et al.This study employed ultrasonic-microwave-assisted extraction (UMAE) to isolate water-soluble polysaccharides from fig (Ficus carica L.) leaves (FLPs). Polysaccharide yield was used as the primary index to evaluate extraction efficiency. The effects of material-liquid ratio, microwave power, extraction temperature, and extraction time on polysaccharide yield were systematically investigated through single-factor experiments, followed by response surface methodology optimization. Structural characterization and antioxidant … …American Journal of Biochemistry and Biotechnology, Vol. 21, Issue 4 · 3 Mar 2026 · 1,671 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Ultra-High-Pressure Treatment on the Chemical Composition and Aroma of Flue-Cured Tobacco Leaves for Heated Tobacco ProductsXinbo Lu, Jie Yin, Ying Yuan et al.The influences of different Ultra-High-Pressure (UHP) treatments on the chemical composition and the low-temperature pyrolysis products of Flue Cured Tobacco Leaves (FCTL) that applied in heated tobacco products were investigated in this study. Results indicated that UHP treatment reduced total alkaloids content significantly (p<0.05), especially 500-600 MPa treatment group (2.34±0.00%, 2.34±0.01%). Increase in sugars and potassium content were observed after … …American Journal of Biochemistry and Biotechnology, Vol. 21, Issue 2 · 19 Oct 2025 · 2,150 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEffect of Lead on the Chlorophyll and Antioxidant Response in the Leaves of Arabidopsis thalianaJun Xing, Cailing Yuan, Hui Yu et al.Lead (Pb) is a non-essential heavy metal element for plants. In this study, the effect of 0.025, 0.05, 0.1, 0.25, and 0.5 g/L Pb on the chlorophyll and antioxidant response was analyzed in the leaves of Arabidopsis thaliana. The results indicate that 0.025 g/L Pb had no significant effect on the fluorescence intensity of chlorophyll. However, 0.05, 0.1, 0.25, and … …American Journal of Biochemistry and Biotechnology, Vol. 20, Issue 1 · 31 Mar 2024 · 4,628 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleOptimization of Purification Technology and Antioxidant Activity of Total Flavonoids from Sea Buckthorn LeavesJiale Shan, Yang Liu, Pu Zhao et al.China is rich in sea buckthorn (Hippophae rhamnoides L.)resources and a large amount of sea buckthorn fruit is used to extract oil andjuice every year. However, Sea Buckthorn Leaves (SBL), which are full offlavonoids, are discarded as waste. To make full use of resources and turn waste into valuables, theoptimal purification process of flavonoids from SBL was studied and theantioxidant … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 3 · 27 Aug 2022 · 6,073 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleOptimization of Rumen Bioprocess through The Addition of Phosphorus and Sulfur Minerals on Ammoniated Palm Leaves and Fronds (Elaeis Guineensis Jacq.)Suyitman, Lili Warly, James Hellyward, Roni PazlaThis research aims to determine the optimal dosage of Phosphorus (P) and Sulfur (S) minerals for rumen microbial fermentative activity. The research method used an experimental method with a factorial randomized block design (3×3) with three repetitions for mineral P and S. P was the first factor with three dose levels, namely Po = 0.0%, P1 = 0.27% and P2 … …American Journal of Animal and Veterinary Sciences, Vol. 16, Issue 4 · 22 Oct 2021 · 6,352 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleAntibacterial Activity of Lotus Leaves (Nelumbo Nucifera) Against Food-Borne PathogensJianxin Chen, Changyin Wang, Xiaotian Chen et al.The antibacterial activity of different solvent extracts from lotus leaves against four food-borne bacteria (Escherichiacoli, Salmonellatyphimurium, Staphyloccocusaureus, Bacillussubtilis) was analyzed by agar diffusion method and the ethanol extract of the plant was found to have the highest antimicrobial activity with the diameter of inhibition zones ranging from 17.2 to 17.8 mm. Then the ethanol extract of lotus leaves were further … …American Journal of Biochemistry and Biotechnology, Vol. 11, Issue 1 · 18 Nov 2014 · 10,152 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleBio-Guided Study on Melastoma malabathricum Linn Leaves and Elucidation of its Biological ActivitiesMourouge Saadi Alwash, Nazlina Ibrahim, Wan Yaacob AhmadThe present study aimed to isolate and identify constituents with antibacterial activity from the Methanol extract of Melastoma malabathricum leaves (MMML) through bioassay guided fractionation. Furthermore, the study scoped to evaluate the cytotoxic effects of M. malabathricum leaves fractions for possible protective effect of antoxidative constituents present in the fractions. The MMML extract was fractionated by Vacuum Liquid Chromatography (VLC) … …American Journal of Applied Sciences, Vol. 10, Issue 8 · 24 Jul 2013 · 9,513 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleIdentification and Mode of Action of Antibacterial Components from Melastoma malabathricum Linn LeavesMourouge Saadi Alwash, Nazlina Ibrahim, Wan Yaacob AhmadThe present study aimed to assess the antibacterial activity of the methanol extract of Melastoma Malabathricum Leaves (MMML), active fraction of M. Malabathricum Leaves (ML5) and isolated kaempferol-3-O-(2",6"-di-O-p-trans-coumaroyl)-β-glucopyranoside (Kf) and to describe the preliminary mode of action against Gram-positive and Gram-negative bacteria. The MMML extract was fractionated by Vacuum Liquid Chromatography (VLC) to afford M. malabathricum Leaves fractions (ML1-ML6) of … …American Journal of Infectious Diseases, Vol. 9, Issue 2 · 18 Jun 2013 · 12,621 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleInteractive Effects of the Feeding of Leucaena Leaves and Curcumin on Macronutrient Digestion and Nitrogen Balance in Beef CattleC. Yuangklang, J. Khotsakdee, K. Vasupen et al.Abstract: Problem statement: The feeding of curcumin to beef cattle has been shown to increase nitrogen retention and decrease the apparent digestibility of acid detergent fiber in beef cattle. It was suggested that there could be interactions between the effects of curcumin and the composition of the ration. Approach: In this study with beef cattle, concentrates without or with curcumin … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 1 · 15 Dec 2010 · 8,067 accessesView PDFCite