Food Biology最新文献

{"title":"Preliminary study on the antibacterial activity of garlic (Allium sativum) on Salmonella, Shigella, and Escherichia coli","authors":"Damtew Bekele, Guta Gebisa","doi":"10.25081/fb.2023.v12.8596","DOIUrl":"https://doi.org/10.25081/fb.2023.v12.8596","url":null,"abstract":"This experiment was conducted to see if garlic would inhibit the growth of Salmonella, Shigella and Escherichia coli. This helps to understand the effectiveness of home remedies such as natural herbs including garlic for medicinal purposes. This study focuses on the significant antibacterial activity of garlic (Allium sativum) extract against gram negative bacteria like Salmonella, Shigella and E. coli. The plant parts are known to have antimicrobial activity on bacteria which are known to be pathogenic to animals in general and to humans in particular. The plant extracts were inoculated on prepared media of microbial culture containing Salmonella, Shigella and E. coli species. The result obtained indicates garlic has a strong effect on Salmonella by reducing the number of colonies that survive due to exposure to the antimicrobial agent which is approximately similar to that of Salmonella but E. coli species showed some percent of resistance in comparison to Salmonella and Shigella.","PeriodicalId":434835,"journal":{"name":"Food Biology","volume":" 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135241064","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}

{"title":"Total phenolic content, total flavonoid content and in vitro antioxidant activities measured by the FRAP, ABTS, DPPH and ORAC assays of Sri Lankan black and green tea (Camellia sinensis) infusions","authors":"T. Thennakoon, P. D. Abeysinghe, P. Ranasinghe, R. Pathirana, A. White, W. Fernando, S. Abeysinghe, S. Premakumara","doi":"10.25081/fb.2022.v11.7800","DOIUrl":"https://doi.org/10.25081/fb.2022.v11.7800","url":null,"abstract":"Tea is one of the most ancient and popular therapeutic beverages consumed by people all over the world. It is made from the leaves and buds of the plant “C. sinensis”. Tea is cultivated in more than thirty countries around the world as a plantation crop. In the present study, thirty tea samples of 20 black and 10 green tea manufactured in Sri Lanka were screened for antioxidant activities. Black tea samples were obtained from the three main geographical regions low (Dust (I), BOPF, BOPI, OPI, Pekoe), mid (Dust (I), Dust, BOPF Local, BOPI, BOP, OPI, Pekoe) and up (Dust, BOPF, BOP, FBOP, FBOPI, OPA, OPI, Pekoe) country of Sri Lanka. Green tea samples are manufactured by two different processing methods; panning (Ceylon GT Chunmee (I), Ceylon GT Chunmee (II), Ceylon GT Fanning’s, Ceylon GT Gun Powder (GP) (Extra Spl), Hyson, OPA green tea Ceylon GT Special Hyson) and steaming (Ceylon Sencha OPA, Ceylon Tencha, Cut Twist Curl (CTC) green tea) were used in the investigation. Total phenolic content (TPC), total flavonoid content (TFC), and antioxidant activities using ABTS, FRAP, DPPH and, ORAC assays were determined for each tea infusion. According to the results, phenolic content was higher in green tea than that of black tea and flavonoid content was lower in green tea than in black tea. Results of all antioxidants assays showed higher values for green tea than black tea. Neither the geographic area from which the samples of black tea came nor the method of preparation of green tea showed any significant differences in the activities. The results of the study have shown that Sri Lankan tea has compounds with antioxidant activities. Therefore, Sri Lankan tea can be used as a therapeutic beverage and a possibility to use the tea for producing antioxidant drugs through extraction and isolation processes.","PeriodicalId":434835,"journal":{"name":"Food Biology","volume":"263 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133746396","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}

{"title":"Verification of phosphorus critical level for bread wheat (Triticum aestivum L.) in Kofole District of West Arsi Zone, Oromia, Ethiopia","authors":"A. Husien, Tilahun Firomsa, Tilahun Abera","doi":"10.25081/fb.2021.v10.7598","DOIUrl":"https://doi.org/10.25081/fb.2021.v10.7598","url":null,"abstract":"Verification of phosphorus critical level for bread wheat was conducted in Kofole District in 2019 cropping season with the objectives to verify phosphorus critical (Pc) level and determined during soil test crop response based phosphorus fertilizer calibration and to create awareness on soil test crop response based fertilizer recommendation. Composite soil samples at the depth of 0-20 cm in the zigzag method were collected from 10 farmers’ fields for Eutric Vertisols. Likewise, soil samples analyses were made to identify available P in the level of the required phosphorus in the select crop fields for the actual experiment. The treatments included (1) soil test based phosphorus calibration result; (2) farmers’ practice in the area which was assessed by the surrounding farmers’ and (3) no fertilizer application (control) and each treatment was planted on 10*10m experimental plot & the design was randomized complete block design replicated over farmers. Bread wheat, Ogolcho variety, was used with seed rate of 150 kg ha-1and other cultural practices such as weed and rust management were used from which had been recommended for the area. The partial budget analysis showed that the highest net income (71630.48 ETB) was from the soil test based recommended and the lowest net benefit (44378.55 Birr ha-1)  was obtained from control treatment with a marginal rate of return (653.38%) which is greater than the minimum rate of return (MRR) 100%. The result showed that the average grain yield of 4745 kg ha-1 was obtained from the application of soil test based phosphorus calibration (Pc and Pf) followed by blanket recommendation (3853 kg ha-1) and 2778 kg ha-1 for the control treatment. The recommended N rate, 69 kg N ha-1 with soil test based phosphorus critical level gave a 58.54% grain yield advantage over the control. In general, soil test and crop response based fertilizer recommendation for crops increases crop yields through the application of adequate nutrient rates for the identified soil nutrient deficiencies in specific locations.","PeriodicalId":434835,"journal":{"name":"Food Biology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129496470","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}