Pub Date : 1900-01-01DOI: 10.51406/jnset.v16i2.1849
F. Oyeyipo, T. O. Adesetan, H. Egberongbe
The effect of fungi of tomato fruits (Lycopersicum esculentum) were investigated at Ijebu-Ode, south western Nigeria. Aspergillus niger, Fusarium oxysporum, Rhizopus stolonifer and Curvularia species were isolated from deteriorating tomato and used for inoculating fresh and healthy tomato samples. The isolates (Aspergillus niger, Fusarium oxysporum, Rhizopus stolonifer and Curvularia species) were then inoculated separately into healthy tomato samples. Storage of samples in modified atmospheres and the effects of inoculation on quality changes were also evaluated. Modified atmospheres designed by packing the samples inside a polythene bag of 12μm thickness significantly maintained the quality of the samples compared with the controls. The isolates were then evaluated for mycotoxin production using thin layer chromatography and mycotoxigenic potential was assessed by animal feeding trial using rats of the wistar strain fed orally with different concentrations of the mycotoxin extracts. Mycotoxins were detected from tomato samples inoculated with Rhizopus, Aspergillus and Fusarium species, before and after autoclaving for 15 min at 121oC. Experimental rats fed on mycotoxin extracts developed symptoms of neurotoxicity. Most of the fungal isolates showed great potential for mycotoxin production, which is of concern in public health. Modified atmosphere created by using sterile polythene bags of different thicknesses is therefore recommended for control of fungi infection of tomato fruits and extension of shelf life.
{"title":"MYCOBURDEN OF TOMATO (Lycopersicum esculentum MILL), INOCULATION-INDUCED MYCOTOXIN PRODUCTION AND CONTROL BY PASSIVE MODIFIED ATMOSPHERE","authors":"F. Oyeyipo, T. O. Adesetan, H. Egberongbe","doi":"10.51406/jnset.v16i2.1849","DOIUrl":"https://doi.org/10.51406/jnset.v16i2.1849","url":null,"abstract":"The effect of fungi of tomato fruits (Lycopersicum esculentum) were investigated at Ijebu-Ode, south western Nigeria. Aspergillus niger, Fusarium oxysporum, Rhizopus stolonifer and Curvularia species were isolated from deteriorating tomato and used for inoculating fresh and healthy tomato samples. The isolates (Aspergillus niger, Fusarium oxysporum, Rhizopus stolonifer and Curvularia species) were then inoculated separately into healthy tomato samples. Storage of samples in modified atmospheres and the effects of inoculation on quality changes were also evaluated. Modified atmospheres designed by packing the samples inside a polythene bag of 12μm thickness significantly maintained the quality of the samples compared with the controls. The isolates were then evaluated for mycotoxin production using thin layer chromatography and mycotoxigenic potential was assessed by animal feeding trial using rats of the wistar strain fed orally with different concentrations of the mycotoxin extracts. Mycotoxins were detected from tomato samples inoculated with Rhizopus, Aspergillus and Fusarium species, before and after autoclaving for 15 min at 121oC. Experimental rats fed on mycotoxin extracts developed symptoms of neurotoxicity. Most of the fungal isolates showed great potential for mycotoxin production, which is of concern in public health. Modified atmosphere created by using sterile polythene bags of different thicknesses is therefore recommended for control of fungi infection of tomato fruits and extension of shelf life. \u0000 \u0000 \u0000 ","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117293980","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}
Pub Date : 1900-01-01DOI: 10.51406/jnset.v17i1.1895
A. Aribisala, O. Komolafe, O. M. Sanusi, O. Martins
Ergonomics deals with the methods and processes of designing workplaces so that they fit the individuals that make use of them. This paper focuses on the anthropometric evaluation of the lecture hall’s seat of a University. Two anthropometric dimensions, the popliteal height (PH) and the buttock-popliteal length (BP) of 188 undergraduate students using the University lecture hall were taken. The lecture hall’s seat has height of 465mm and depth of 405mm. It was found that 61% of the student population used for the study was in the fit range of the seat height. Examining the seat depth and buttock to popliteal length, it was observed that 53.7% of the students may be comfortable using the present seat depth design of 405mm dimension, while over 46% of the students’ population used for the study might not be able to utilize the backrest of the seat. From this study, it was found that the seat depth of the University lecture hall’s seats were not adequate and a model should be developed to determine the most appropriate seat depth required for the University’s lecture hall’s seats.
{"title":"ANTHROPOMETRIC EVALUATION OF A UNIVERSITY LECTURE HALL’S SEAT","authors":"A. Aribisala, O. Komolafe, O. M. Sanusi, O. Martins","doi":"10.51406/jnset.v17i1.1895","DOIUrl":"https://doi.org/10.51406/jnset.v17i1.1895","url":null,"abstract":"Ergonomics deals with the methods and processes of designing workplaces so that they fit the individuals that make use of them. This paper focuses on the anthropometric evaluation of the lecture hall’s seat of a University. Two anthropometric dimensions, the popliteal height (PH) and the buttock-popliteal length (BP) of 188 undergraduate students using the University lecture hall were taken. The lecture hall’s seat has height of 465mm and depth of 405mm. It was found that 61% of the student population used for the study was in the fit range of the seat height. Examining the seat depth and buttock to popliteal length, it was observed that 53.7% of the students may be comfortable using the present seat depth design of 405mm dimension, while over 46% of the students’ population used for the study might not be able to utilize the backrest of the seat. From this study, it was found that the seat depth of the University lecture hall’s seats were not adequate and a model should be developed to determine the most appropriate seat depth required for the University’s lecture hall’s seats. \u0000 ","PeriodicalId":389500,"journal":{"name":"Journal of Natural Sciences Engineering and Technology","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131151819","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：