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756 articles for “chemical”
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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 titleNear Infrared Spectroscopy Identification Method for Five Chemical Types of Cinnamomum camphoraBailian Tu, Yueting Zhang, Yongjie Zheng et al.To more quickly and accurately identify the five chemical types of Cinnamomum camphora, a desktop and portable near-infrared spectrometer was used to collect the near-infrared spectra of the leaves of the five chemical types of C. camphora. Combined with chemometric methods, the near-infrared spectra of different chemical types of C. camphora were discriminated and analyzed. Using a desktop near-infrared spectrometer … …American Journal of Biochemistry and Biotechnology, Vol. 21, Issue 1 · 20 Feb 2025 · 5,288 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleCombination of Organic, Chemical and Biological Fertilizers to Accelerate Mangrove Growth on the East Coast of Sumatra, IndonesiaBudi Utomo, Yuda Ilham Ramadhan, Yunasfi et al.Efforts to rehabilitate mangroves often do not yield satisfactory planting results. Low maintenance measures due to the tidal situation of the area make it difficult for rehabilitation actors to carry out fertilization and insertion. This study aims to increase the growth of Rhizophora mucronata with fertilization treatment during planting with various biological fertilizers. The study was designed using a completely … …OnLine Journal of Biological Sciences, Vol. 25, Issue 3 · 24 Oct 2025 · 2,498 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 titleEvaluation of the Effects of the Addition of Salt, Type of Additive and the Shelf Life, on Chemical Composition of Pennisetum purpureum (Schumach) (Maralfalfa) Silages in NigerMaman Lawal Abdoul Aziz, Seydou Korombé Hamza, Djibo Ibrahim et al.Seasonal variations in the quantity and quality of fodder constitute an obstacle to the development of ruminant breeding in Niger. This is why this study was carried out to evaluate the effects of salt addition, shelf life, and type of additive on the chemical composition of Pennisetum purpureum Schumach (Maralfalfa) silages. These aspects were retained because salt, in addition to … …American Journal of Animal and Veterinary Sciences, Vol. 19, Issue 3 · 12 Sep 2024 · 4,720 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleComparison of Chemical Characteristics of Various Commercial Animal Skin CrackersSiti Susanti, Antonius Hintono, Sri Mulyani et al.This study aims to compare the data on chemical characteristics (protein content, fat, ash, moisture, Free Fatty Acid (FFA), Thiobarbituric Acid (TBA), and total energy) of commercial skin crackers made from various kinds of animal skin. Four categories of commercial animal skin crackers from the same producer were assigned as treatments, including cowhide crackers, buffalo askin crackers, fish skin crackers, … …American Journal of Animal and Veterinary Sciences, Vol. 17, Issue 4 · 19 Dec 2022 · 5,712 accessesView PDFCite
Review ArticleOpen accessEvery word in the titleA Review of Detection Techniques for Chemical Oxygen Demand in WastewaterDan Wu, Yinglu Hu, Ying LiuWater pollution is a major problem all over the world, the detection techniques of water play an important role in the evaluation of water pollution. Chemical Oxygen Demand (COD) is an important index of the evaluation of water pollution. The paper reviews the detection methods of chemical oxygen demand in wastewater, introduces the standard of chemical oxygen demand emission limit … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 1 · 27 Jan 2022 · 8,917 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleOptimization of Ultrasonic-Assisted Total Flavonoids Extraction from Flower of Albizia Julibrissin Durazz. by Response Surface Methodology for Characterization of Chemical Profile and Evaluation of Antioxidant and Tyrosinase Inhibitory ActivitiesYijie Cheng, Yuwen Zhang, Hanzhang Sun et al.To investigate the flavonoids in flower of Albizia julibrissin (‘He Huan Hua’ in Chinese), the ultrasonic-assisted extraction of total flavonoids from ‘He Huan Hua’ was optimized by response surface methodology and the chemical profile was characterized by HPLC- QTOF-MS/MS. What’s more, the antioxidant and tyrosinase inhibitory activities of ‘He Huan Hua’ were also evaluated in this study. The extraction time, … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 1 · 14 Mar 2022 · 6,733 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleChemical Constituents, Antibacterial and Coagulation Activity of the Essential Oil from the Stem of Artemisia argyle H. Lév.Jiale Shan, Hongli ZhouArtemisia argyle H. Lév. (A. argyle) is a plant of historical importance known as the "mother of herbs" in the Middle Ages. As the leaves of A. argyle have been studied more, but the stems has not been reported. This paper explores the chemical constituents, antibacterial and coagulation activities of the Essential Oil from the Stems of A. argyle (EOSAA) … …American Journal of Biochemistry and Biotechnology, Vol. 17, Issue 2 · 31 May 2021 · 6,428 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEssential Oils from The Dropped Flowers of Camellia japonica: Extraction Optimization, Chemical Profile and Antibacterial PropertyYunqi Kong, Gaochao Wang, Xinyu Wang et al.Camellia japonica is one of the most economically valuable species that can be taxonomically placed in the Theaceae family. Many horticultural varieties of C. japonica have been cultivated as ornamental trees worldwide, owing to their charming flowers. However, young C. japonica flowers usually drop in a “decapitated” form during the peak flowering stage, causing a resource waste. In this study, … …American Journal of Biochemistry and Biotechnology, Vol. 17, Issue 1 · 27 Jan 2021 · 6,985 accessesView PDFCite