Journal Of Chemical Society Of Nigeria最新文献_第9页

EVALUATION OF LEVEL OF RANCIDITY OF EDIBLE OIL IN SOME FRIED SNACKS FOOD 某些油炸零食中食用油酸败程度的评价

Journal Of Chemical Society Of Nigeria Pub Date : 2023-03-04 DOI: 10.46602/jcsn.v48i1.853

R. Adelagun, E. Berezi, J. Fagbemi, O. J. Igbaro, F. E. Aihkoje, O. Ngana, G., Osondu, M. S. Garba

{"title":"EVALUATION OF LEVEL OF RANCIDITY OF EDIBLE OIL IN SOME FRIED SNACKS FOOD","authors":"R. Adelagun, E. Berezi, J. Fagbemi, O. J. Igbaro, F. E. Aihkoje, O. Ngana, G., Osondu, M. S. Garba","doi":"10.46602/jcsn.v48i1.853","DOIUrl":"https://doi.org/10.46602/jcsn.v48i1.853","url":null,"abstract":"This work evaluated the level of rancidity of edible oil in six (6) fried snacks food, namely, beans cake (Akara), groundnut cake (Kuli-kuli), bread buns, fried fish, fried yam chips and fried potatoes chips, purchased from hawkers in Wukari, Taraba State, Nigeria.. The rancidity indicators and their ranges in the samples obtained, include, Acid Value (4.10 – 6.90 mgKOH/g), Free Fatty Acid (2.05 – 3.45 mgKOH/g), Peroxide Value (12 – 46.60 mEq/kg), Moisture Content (4.00 – 44.30 %), Conductivity (0.14 – 1.58 µS/cm) and Viscosity (26.20 – 56.50 mm2/S). The results obtained suggested that the fried snacks foods contain hazardous secondary oxidative products, an implication that the oil in the food sample has become rancid and as such, unsafe for human consumption. The reason given for this is that the oil has been used for frying for too many times instead of the recommended two times. The values obtained in this study far exceeded the stipulated standard acceptable ranges given by WHO, FAO and INSO. It is therefore recommended that the public should be advised and educated that oil that has been used for frying twice should be discarded and not used again. Also, Policy makers and relevant authorities should develop a device for in-situ determination for checking of the quality of oil used for fried snacks food in restaurants without going to the laboratory.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90789105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PHYSICOCHEMICAL EVALUATION AND FTIR CHARACTERISATION OF THE OIL EXTRACTED FROM AVOCADO SEED 牛油果籽油的理化评价及特性研究

Journal Of Chemical Society Of Nigeria Pub Date : 2023-03-01 DOI: 10.46602/jcsn.v48i1.849

S. Girigisu, A. Salman, F. B. Shittu, A. O. Salawu

{"title":"PHYSICOCHEMICAL EVALUATION AND FTIR CHARACTERISATION OF THE OIL EXTRACTED FROM AVOCADO SEED","authors":"S. Girigisu, A. Salman, F. B. Shittu, A. O. Salawu","doi":"10.46602/jcsn.v48i1.849","DOIUrl":"https://doi.org/10.46602/jcsn.v48i1.849","url":null,"abstract":"Oil from avocado seed was extracted via the AOAC standard method using n-hexane as the extracting agent. The main physico-chemical properties evaluated for includes saponification value, free fatty acid, iodine value, peroxide value, acid value and refractive index. The results revealed that the saponification value (mg KOH/g), acid value (mg KOH/g), iodine value (mg iodine/100g), peroxide value (mg/peroxide/kg), Free fatty acid(%), specific gravity and refractive index were found to be 150.348; 0.366; 3.81g/100g; 14 Meq/kg , 0.1833, 0.88g/cm3 and 1.447 respectively. The low acid value obtained of the oils shows the oil is an edible one. High saponification value obtained revealed that the oil has great potential in industrial applications such as cosmetics and soap making. The iodine values obtained from this research indicates that it is a non-drying oil and also suggest that the oil contain few unsaturated bonds while low peroxide value is an indication that the oil will have low susceptibility to rancidity and deterioration. The FTIR analysis also reveal the oil to contain basic functional group which include the CH2 asymmetric stretching of (2855.1 cm-1 -2922.2 cm-1), C=O stretching of carbonyl group (1744.4 cm-1) and C-H scissor stretching of alkane (1162.9 cm-1- 1461.1 cm-1)","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"84 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78226589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

EFFECT OF DAYS OF FERMENTATION AND PALM OIL ON THE LEVELS OF CYANIDE IN GARRI SAMPLES 发酵天数和棕榈油对肉卤样品中氰化物含量的影响

Journal Of Chemical Society Of Nigeria Pub Date : 2023-03-01 DOI: 10.46602/jcsn.v48i1.848

N. J. Maduelosi, U. Onuigbo, B. Egede

引用次数: 0

PHYTOCHEMICAL STUDIES OF THE STEM BARK OF Mitragyna inermis 密天麻茎皮的植物化学研究

Journal Of Chemical Society Of Nigeria Pub Date : 2023-03-01 DOI: 10.46602/jcsn.v48i1.850

M. Mukhtar, H. Muhammad, A. Garba

引用次数: 0

STATISTICAL ANALYSIS OF PHYSIOCHEMICAL PROPERTIES OF AJALI RIVER STRETCH IN ENUGU, ENUGU STATE NIGERIA 尼日利亚埃努古州埃努古阿贾利河河段理化性质的统计分析

Journal Of Chemical Society Of Nigeria Pub Date : 2023-03-01 DOI: 10.46602/jcsn.v48i1.851

J. O. Nwerem, E. Ejikeme, N. Ekere, C. Ibeto

{"title":"STATISTICAL ANALYSIS OF PHYSIOCHEMICAL PROPERTIES OF AJALI RIVER STRETCH IN ENUGU, ENUGU STATE NIGERIA","authors":"J. O. Nwerem, E. Ejikeme, N. Ekere, C. Ibeto","doi":"10.46602/jcsn.v48i1.851","DOIUrl":"https://doi.org/10.46602/jcsn.v48i1.851","url":null,"abstract":"This work studied the physiochemical properties of Ajali River polluted with Industrial effluent at different sampling points from -250m upstream before the pollution to 2250m downstream. Statistical package for Social Science (SPSS) was used for the statistical analysis. Post ANOVA test was used to determine if there is any significant difference between the means and at which distance the difference occurred. A measuring wheel and Global Positioning System (GPS) were used for the exact locations studied. The azide-Winkler method was used for DO determination, while the five-day incubation method was used for BOD. It was observed that there was a significant difference (p˂0.005) between the means of the properties across the sampling points. Dissolve Oxygen was found to be higher in the rainy season with a range of 3.82±0.47 to 7.70±0.40. Biochemical Oxygen demand was equally higher in the rainy season with a range of 2.05±0.02 to 5.02±0.41. Chemical Oxygen demand was higher in the rainy season with a range of 6.20±0.12 to 15.04±0.03. It was observed that the effect of the pollution decreased along the sampling points away from the point of discharge to the stream suggesting that the river has a natural tendency to purify itself.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84485716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

LUPEOL AND LAURIC ACID ISOLATED FROM ETHYL ACETATE STEM EXTRACT OF Justicia secunda AND THEIR ANTIMICROBIAL ACTIVITY 苦参茎乙酸乙酯提取物的分离纯化及抑菌活性研究

Journal Of Chemical Society Of Nigeria Pub Date : 2023-03-01 DOI: 10.46602/jcsn.v48i1.852

B. Bako, O. Ushie, S. Malu

{"title":"LUPEOL AND LAURIC ACID ISOLATED FROM ETHYL ACETATE STEM EXTRACT OF Justicia secunda AND THEIR ANTIMICROBIAL ACTIVITY","authors":"B. Bako, O. Ushie, S. Malu","doi":"10.46602/jcsn.v48i1.852","DOIUrl":"https://doi.org/10.46602/jcsn.v48i1.852","url":null,"abstract":"The method of cold maceration was used in the extraction of Justicia secunda starting with a non-polar (hexane) to a more polar solvent. The crude extracts of hexane, ethyl acetate, acetone, and methanol from the stem of were obtained using the polarity guided cold extraction method. Lupeol and Lauric acid are two well-known compounds that were discovered when a portion of the ethyl acetate extract of J. secunda was subjected to spectroscopic (1H NMR) structural elucidation. Based on the presence of Lupeol and Lauric acid in J. secunda stem, the plant could be a viable source of antimicrobial agents in the near future. The results of the antimicrobial activity obtained from the fractions of the Stem inhibited or exhibited activity against Methicillin resist Staph aureus, Vancomycin resistant enterococci, Staphylococcus aureus, Escherichia coli, Klebsiella pneumonia, Helicobacter pylori, Campylobacter fetus, Proteus mirabilis, Pseudomonas aeruginosa, Candida tropicalis, and Candida krusei. The plant J. secunda traditionally employed in the treatment of anemic circumstance, blood boost, wound healing, abdominal pain and fertility issues. The overall results confirm the significance of the use of the plant in traditional medicinal treatment of anamic circumstances, blood boost, wound healing etc, in line with reported claims because of the presence of isolated compounds.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"15 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91420299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

COMPARATIVE SYNTHESIS, SPECTRAL AND ANTIMICROBIAL STUDIES OF METAL (II) COMPLEXES DERIVED FROM ASPIRIN 阿司匹林金属络合物的比较合成、光谱和抗菌研究

Journal Of Chemical Society Of Nigeria Pub Date : 2023-02-28 DOI: 10.46602/jcsn.v48i1.844

S. Jibril, H. Jibrin, B. Isah, S. Abubakar, D. Dahuwa

引用次数: 0

ISOLATION OF STIGMASTEROL AND GASTROPROTECTIVE ACTIVITY OF THE ETHYL ACETATE PORTION FROM ACACIA NILOTICA LINN (FABACEAE) SEEDS 相思种子中豆甾醇的分离及乙酸乙酯部分的胃保护活性

Journal Of Chemical Society Of Nigeria Pub Date : 2023-02-28 DOI: 10.46602/jcsn.v48i1.843

M. Muhammad, A. Mann, L. Fadipe, M. H. Kamdem, E. Mmutlane, D. Ndinteh

{"title":"ISOLATION OF STIGMASTEROL AND GASTROPROTECTIVE ACTIVITY OF THE ETHYL ACETATE PORTION FROM ACACIA NILOTICA LINN (FABACEAE) SEEDS","authors":"M. Muhammad, A. Mann, L. Fadipe, M. H. Kamdem, E. Mmutlane, D. Ndinteh","doi":"10.46602/jcsn.v48i1.843","DOIUrl":"https://doi.org/10.46602/jcsn.v48i1.843","url":null,"abstract":"Acacia nilotica Linn is used traditionally in the treatment of various diseases, such as diarrhea, ulcer, dysentery, asthma, inflammation and cancer. The present study aimed at isolation and characterization of a steroidal compound and evaluating the gastroprotective activity of the ethyl acetate portion of A. nilotica seeds in indomethacin-induced ulcer model. Fractionation of the ethyl acetate portion using standard chromatographic techniques led to the isolation of a compound (B2-I) which on further purification and characterisation using physical, chemical and spectral analysis, and by comparison with literature values was identified as stigmasterol. The effect of ethyl acetate portion of A. nilotica on experimentally induced ulcer was dose-dependent with curative ratios of 40%, 60% and 75% at concentrations of 100, 200 and 300 mg/kg body weights respectively. It significantly (P<0.05) decreased free and total acidity and increased the pH of gastric juice with respect to the indomethacin treated group. This justifies the ethnomedicinal use of A. nilotica seed as an antiulcer agent. The study recommends that A. nilotica seeds be evaluated against other ulcer models such as ethanol and stress induced ulcers.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82545234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

APPLICATION OF PRINCIPLES AND TOOLS IN GREEN CHEMISTRY TO EDUCATION USING ROSE FLOWER EXTRACT AS ACID-BASE INDICATOR. 以玫瑰花提取物为酸碱指示剂的绿色化学原理和工具在教育中的应用。

Journal Of Chemical Society Of Nigeria Pub Date : 2023-02-28 DOI: 10.46602/jcsn.v48i1.847

A. Olanrewaju, N. O. Adeosun

{"title":"APPLICATION OF PRINCIPLES AND TOOLS IN GREEN CHEMISTRY TO EDUCATION USING ROSE FLOWER EXTRACT AS ACID-BASE INDICATOR.","authors":"A. Olanrewaju, N. O. Adeosun","doi":"10.46602/jcsn.v48i1.847","DOIUrl":"https://doi.org/10.46602/jcsn.v48i1.847","url":null,"abstract":"Currently, there is increasing awareness in global sustainability. To make sure that prospective generations of chemists are fortified with appropriate knowledge on how to safeguard the earth for future generations, substantial efforts and variations in educational programs/curriculum at our various institutions will be needed. Green Chemistry is considered as significant tool to control the rise of hazardous chemicals, encourages revolution of product that are eco-friendly and economically stable. Synthetic chemical used in the laboratory as indicator for acid- base titrations can be switched to using the natural indicators from various flower extract and as well gives accurate results. This study therefore applied the concept of green chemistry principles and tools into chemistry learning to produce acid-base indicator from Rose flower (Rosa sp.) extract by extraction method, then macerated and extracted again in ethanol, n-hexane and chloroform respectively, It was tested in solution of pH 1-12 and found out that Rosa sp is a good replacement for phenolphthalein, methyl red, etc. indicators for different acid and bases. It is then concluded that natural indicators are substitute to synthetic indicator. This therefore reflects green chemistry principles 1, 4, 5, 7, and 12, respectively. The flower is eco-friendly, simple to prepare, pollution free, harmless to health and inert. It was then recommended that institutions should (1) Create awareness of green chemistry principles and tools to their Chemistry students (2) Enforce their Chemistry lecturers to imbibe the use of natural indicators for their various titrations carried out in the institution laboratory to promote sustainable development.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"2021 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86827146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

FREE RADICAL SCAVAGING ACTIVITY AND ANTIDIABETIC PROPERTY OF ETHANOL STEM BARK EXTRACT OF Uapaca togoensis IN ALLOXAN INDUCED DIABETIC ALBINO RATS 四氧嘧啶诱导的糖尿病白化大鼠的自由基清除活性及抗糖尿病作用

Journal Of Chemical Society Of Nigeria Pub Date : 2023-02-28 DOI: 10.46602/jcsn.v48i1.841

M. M. Idris, H. P. Nenge

{"title":"FREE RADICAL SCAVAGING ACTIVITY AND ANTIDIABETIC PROPERTY OF ETHANOL STEM BARK EXTRACT OF Uapaca togoensis IN ALLOXAN INDUCED DIABETIC ALBINO RATS","authors":"M. M. Idris, H. P. Nenge","doi":"10.46602/jcsn.v48i1.841","DOIUrl":"https://doi.org/10.46602/jcsn.v48i1.841","url":null,"abstract":"Diabetes mellitus is a disease of worldwide significance and increasing prevalence. This places a demand on researchers to find a solution to it through ethnomedicine. This study investigated the toxicological, antioxidant, anti-diabetic property and hyperlipidemic effect of Uapaca togoensis stem bark extract in alloxan induced diabetic wistar rats. Thirty (30) albino rats were assigned into six groups (A-F) of five rats each. Group A was not induced and used as positive control/nondiabetic group, while groups B-F were induced with alloxan at 150mg/kg administered via intraperitoneally (i.p). Group B used as diabetic control was not treated but allowed access to feed and water. C, D and E were treated with 300mg/kg, 700mg/kg and 1000mg/kg of Uapaca togoensis stem bark extract respectively; while group F was treated with standard drug (glibenclimide) at a dose of 5mg/kg. The doses were administered orally and the treatment lasted for 7 days. Results indicated that the extract have hypoglycemic activity on the diabetic rats. Modified method of Lorke was employed to ascertain the extract toxicity and the result however indicated that the extract was safe for the test rats up to 5000mg per body weight dose. DPPH, FRAP and Hydrogen peroxide assays were used to assess the antioxidant activities of the extract. The results were significant at p<0.05 at all concentrations compared with the standard (vitamin C) and the % inhibitory activities were almost the same with Vitamin C in hydrogen peroxide method. This was an indication that Uapacatogeonsis extractpossess antioxidant properties.","PeriodicalId":15357,"journal":{"name":"Journal Of Chemical Society Of Nigeria","volume":"308 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79917961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0