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57 results for “spectrophotometer”
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Research ArticleOpen accessIn the keywordsEvaluation of Heavy Metals in Gadus morhua and the Associated Cancer RisksKayode Idowu Ogungbemi, Margaret Bose Adedokun, Josephine Nneamaka Onyeka-UbakaGadus morhua is a good protein source but some methods of its preservation can be a source of heavy metals contamination. Gadus morhua samples were collected from nine major markets for the identification and quantification of heavy metals. An Atomic Absorption Spectrophotometer (AAS) from an analytical and consultancy laboratory in the Department of Soil Resources Management, University of Ibadan was … …American Journal of Environmental Sciences, Vol. 20, Issue 1 · 2 Jan 2025 · 5,022 accessesView PDFCite
Research ArticleOpen accessIn the keywordsThreat of the Health Quality of Garden Produces Linked to Pollution by Toxic Metals on Some Gardening Sites of BeninKoumolou Luc, Edorh A. Patrick, Agbandji Lucien et al.Problem statement: Water and soil are vital resources used in agriculture. Current data establish a link between the pollution of soil, water and public health. For this reason, this study attempted to establish a link between the level of pollution of garden sites in lead (Pb), Cadmium (Cd) and Arsenic (As) and the health quality of vegetables grown there, through … …American Journal of Environmental Sciences, Vol. 8, Issue 3 · 23 Apr 2012 · 7,664 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffect of Temperature on the Color of Natural Dyes Extracted Using Pressurized Hot Water Extraction MethodNursyamirah Abd Razak, Siti Marsinah Tumin, Ruziyati TajuddinProblem statement: Traditionally, extraction of natural dyes with boiling method produced only one single tone of colorant/dyes which involved plenty of water in several hours of extraction time. A new modern extraction technique should be introduced especially to textile dyers so that a variety of tone of colorants can be produced in a shorter time with less consumption of water. … …American Journal of Applied Sciences, Vol. 8, Issue 1 · 31 Jan 2011 · 9,850 accessesView PDFCite
Research ArticleOpen accessIn the keywordsIn vitro Assessment of the Color Stability of Two Resin CompositesRacha Joseph Hajj, Lara Nasr, Carlos Khairallah, Louis HardanThis in vitro study aims to evaluate the effects of thermocycling and immersion in common dietary colorants on the color stability of two resin composites. 80 disk-shaped specimens divided into 2 groups of 40 each, were prepared using a plexiglass mold with the desired dimensions, polished, and stored in 37°C distilled water for 24 h. Thermocycling (10,000 cycles) was applied … …Current Research in Dentistry, Vol. 14, Issue 1 · 2 Aug 2023 · 6,860 accessesView PDFCite
Research ArticleOpen accessIn the keywordsEffect of Some Fermentation Parameters on Ethanol Production from Beet Molasses by Saccharomyces cerevisiae CAIM13Awatif Abid Al-JudaibiProblem Statement: Some component of fermentation medium showed to reduce the Saccharomyces cerivisae production of ethanol. Approach: This study was designed to evaluate the role of some fermentation parameters in affecting ethanol productivity from beet molasses BM by Saccharomyces cerevisiae CAIM13. Results: Increase in cell concentration (inoculums size) of the yeast above 3.6×105 cells/100 mL decreased the ethanol yield. The … …American Journal of Agricultural and Biological Sciences, Vol. 6, Issue 2 · 25 Jun 2011 · 8,921 accessesView PDFCite
Research ArticleOpen accessIn the keywordsDietary Intake of Selected Common Vegetable Foods and their Total Carotenoids DeterminationJafar Muhammad EL-QudahProblem Statement: Vitamin A Deficiency (VAD) remains widespread in many countries including Jordan, mainly due to inadequate dietary intake of vitamin A and carotenoids. Approach: Few researches on carotenoid content in vegetables and fruits are carried out. Thus, the aim of this study was to evaluate the dietary intake of selected common foods among a sample of adult Jordanians, by … …American Journal of Agricultural and Biological Sciences, Vol. 3, Issue 4 · 31 Dec 2008 · 8,115 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Methyl Jasmonate and Plant Growth Promoting Rhizobacteria (PGPR) on Antioxidant Potential and Metabolomic Profiles of Zingiberaceae RhizomesHenny Lieke Rampe, Hanny Hesky Pontororing, Hanry Jefry Lengkong et al.The rhizomes of Zingiberaceae plants are used as cooking spices, medicines, cosmetics and beverage ingredients. Zingiberaceae rhizomes have the potential to be immunostimulants, antioxidants and immunomodulators. Antioxidants are chemical compounds that bind free oxygen radicals and prevent free radicals from damaging healthy cells. This research aimed to analyze the antioxidant potential and metabolomic compounds of the rhizomes of the Zingiberaceae … …OnLine Journal of Biological Sciences, Vol. 26, Issue 1 · 10 Apr 2026 · 1,311 accessesView PDFCite
Research ArticleOpen accessIn the abstractExploration and Characterization of Thermophilic Bacteria from the Kerinci-Jambi Geothermal Source for Alcohol ProductionAnthoni Agustien, Weni Cahyati, Yetria RildaAlcohol produced by thermophilic bacteria is renewable and a safe fuel because it is mainly based on microbial fermentation. This research needs to be done to find out the potential alcohol production of thermophilic bacteria because have many advantages such as degrading a much wider range of carbohydrates, the possibility of direct alcohol recovery from the fermentation broth, tolerance to … …OnLine Journal of Biological Sciences, Vol. 24, Issue 3 · 10 Feb 2024 · 5,199 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of Antioxidant and Antibacterial Activities of the Polysaccharides from Mycelium and the Culture Medium of Pleurotus Eryngii Strain UN-1Qing Liu, Haodong Wu, Ying Wu et al.Pleurotus eryngii was one of the most precious and ordinary edible mushrooms, and its polysaccharides were the major active substances. In this study, P. eryngii strain UN-1 was cultured in a liquid medium at 25℃ under a shaking of 80 rpm for 7 days. Two crude polysaccharides named CPN and CPNM were obtained from the mycelium of P. eryngii UN-1 … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 3 · 19 Jul 2022 · 6,176 accessesView PDFCite
Research ArticleOpen accessIn the abstractLeaching of a Nigerian Refractory Gold Ore Using Aqua RegiaOluwasanmi Samuel Teniola, Abraham A. Adeleke, Simeon Ademola Ibitoye, Moshood Deinde ShituIn this research, refractory gold ore from Imogbara deposit in Iperindo area of Osun state Nigeria were collected systematically from various segments of the deposits at different depths to obtain a set of samples that truly represent the deposits. The 50 kg sample collected was subjected to panning in a flowing river to obtain about 1 kg-upgraded sample. The upgraded … …American Journal of Engineering and Applied Sciences, Vol. 15, Issue 1 · 13 Mar 2022 · 7,457 accessesView PDFCite