• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>African Journal of Biotechnology >Comparative evaluation of the physicochemical composition and microbial quality of seven different water sources used in processing root and tuber crops in Umudike, Nigeria
【24h】

Comparative evaluation of the physicochemical composition and microbial quality of seven different water sources used in processing root and tuber crops in Umudike, Nigeria

机译：在尼日利亚卷发中加工根和块茎作物中使用的七种不同水源的物理化学成分和微生物质量的比较评价

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The physicochemical composition and microbial quality of 7 different water sources (Umudike ukwu bore hole (B5), Umuariaga borehole (B3), Nidoro spring water (S2), Umudike bore hole (B4), Umudike school borehole A (B7), Umudike school bore hole B (B6) and Ahiaeke bore hole (B9) used for root and tuber crop processing in Umudike, Nigeria were investigated using standard techniques. The chloride, sulphate, phosphate, dissolved substances, hardness of water, ammonium nitrate and conductivity in all the water samples, fell within the range recommended by the Nigerian Industrial Standard (NIS) or the World Health Organization (WHO) while the values obtained for pH and nitrites were lower than the range given by WHO and NIS. Most of the samples? had higher organic carbon contents than permitted. In terms of dissolved oxygen (D) and total hydrogen (TH), S2 had the highest, B5 and B6 had the least for DO (P > 0.05) while B6 had the least in addition for TH. The biochemical oxygen demand (BOD) of B3 was the highest among the water samples analyzed (P 0.05). Sensory evaluation of the samples showed that they were clear, tasteless and odorless. Microbial analysis carried out indicated the presence of coliforms in the water samples although this does not give any cause for concern as they fell within the standards for coliform in water. The total plate count of the samples ranged from 8.00 to 19.09cfu/100ml with B9 having the highest while B7 had the least. Some of the microorganisms isolated include:?E.coli, salmonella, shigella, fungi and staphylococcus, indicating microbial contamination of these water samples and thus highlights the need for their urgent sterilization. The absence of?Vibrio cholerea?in all the water samples indicate the non-prevalence of cholera in the study area. Finally, most of the water sources used by these communities in processing their root and tuber crops did not meet the recommended standards for nitrites, biochemical oxygen demand,? organic carbon and nitrites in water, underscoring the need for regular checks and on these water sources.
机译：7种不同水源的物理化学组成和微生物质量（Umudike Ukwu孔孔（B5），umuariaga钻孔（B3），Nidoro Spring水（S2），Umudike Bore孔（B4），Umudike School Borehole A（B7），Umudike School使用标准技术研究尼日利亚的钻孔B（B6）和Ahiaeke钻孔孔（B9），用于卷发，尼日利亚，尼日利亚研究。氯化物，硫酸盐，磷酸盐，溶解物质，水硬度，硝酸铵和导电性水样，落在尼日利亚工业标准（NIS）或世界卫生组织（世卫组织）推荐的范围内，而PH和亚硝酸盐的值低于由世卫组织和NIS给出的范围。大多数样本？有有机碳含量高于允许的碳含量。就溶解的氧（D）和总氢（Th），S2具有最高，B5和B6具有最少的（p> 0.05），而B6还具有至少添加到Th。生物化氧需求（BOD） B3的分析中的水样中最高（p 0.05）。样品的感官评估表明它们清晰，无味和无味。进行的微生物分析表明水样中的大肠菌体存在虽然这不会给出任何引起令人担忧的原因，因为它们落入水中的水中的标准中。样品的总板数为8.00至19.09cfu / 100ml，B9具有最高的B9，而B7则具有最小。分离的一些微生物包括：？大肠杆菌，沙门氏菌，志贺氏菌，真菌和葡萄球菌，表明这些水样的微生物污染，从而强调了对其紧急灭菌的需求。缺乏β胆汁？在所有水样中，样本表明研究区域中霍乱的非流行。最后，这些社区使用的大多数水源处理其根和块茎作物并未满足亚硝酸盐的推荐标准，生化氧需求，？有机碳和亚硝酸盐在水中，强调需要定期检查和这些水源。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号