您当前所在位置: 首页 > 学者
为您找到 4 条相关结果
按相关度
  • 按相关度
  • 按时间
  • 按阅读量
  • 代表性成果优先

上传时间

2017年05月02日

【期刊论文】酸性电解水温热处理对有机西兰花清洗消毒

杨宏顺, Qin Liu , Chih Shen Cedric Tan , Hongshun Yang , *, Shifei Wang

LWT - Food Science and Technology,2017,79(-):594-600

2017年09月27日

摘要

本文评估了低浓度电解水(LcEW))(4 mg/L 游离有效氯 )温热处理清洗消毒技术,对有机西兰花安全和质量的影响。发现LcEW在50 oC温热处理情况下,对微生物及病原菌的杀灭能力最强。处理后的西兰花,抗氧化物含量、总酚水平以及铁离子还原力都维持不变,但是和未经过消毒处理的样品对比,氧自由基吸收能力升高。此外,温热处理提升了西兰花坚实度,这与果胶结构的改变相关。结果显示,温热处理引发了果胶链的拟定向和自发聚合。本研究显示,LcEW的温热处理能够在保证新鲜有机西兰花质量不打折扣的前提下,有效的减少微生物总数。

关键词: 消毒清洁, 果胶, 原子力显微镜, 抗氧化活性, 有机食品;Sanitisation, Pectin, Atomic force microscopy, Antioxidant activity, Organic food

  • 69浏览

  • 0点赞

  • 0收藏

  • 2分享

  • 10下载

  • 0评论

  • 引用

上传时间

2017年03月10日

【期刊论文】香芹酚纳米乳剂结合酸性电解水灭活鲜切卷心菜表面细菌,酵母和原生菌群

杨宏顺, Sow LC, Tirtawinata F, Yang H*, Shao Q, Wang S

Food Control,2017,76(-):88-95

2017年08月29日

摘要

Carvacrol is an effective antimicrobial agent originated from essential oils, this natural antimicrobial agent has higher consumer acceptance compared to chemical agents. Due to the low solubility of carvacrol in water, carvacrol was delivered as a nanoemulsion. A carvacrol nanoemulsion contained 3.5% (w/w) oil phase (1% carvacrol and 2.5% corn oil, w/w) and 3.5% (w/w) Tween 80 was produced by ultrasonification at 10 min using 100% amplitude; the median particle size was 309 ± 19 nm. The nanoemulsion was shelf-life stable for 1 month without any significant changes in particle size. When applied against Escherichia coli ATCC 25922 and Pichia pastoris GS115 growth in nutrient broth, carvacrol nanoemulsion (0.5% w/w carvacrol) achieved 3 log reductions of microorganisms. When microorganisms were fixed and dried on stainless steel coupon surface, the carvacrol nanoemulsion treatment was more effective on E. coli than P. pastoris with about 5 and 0.3 log reduction of viable count, respectively. The native microflora on shredded cabbages was challenged by combining carvacrol nanoemulsion and acidic electrolysed water (AEW) that contained 4 mg/L free available chlorine (FAC). The treatment reduced about 0.5 log of aerobic mesophilic and psychrotropic bacteria counts and the antimicrobial activity of carvacrol nanoemulsion and AEW lasted up to 2 days. The results indicated that carvacrol nanoemulsion is promising in controlling the safety of fresh-cut vegetables.

关键词: 纳米乳剂, 香芹酚, 纳米技术, 抗菌剂, 鲜切, 食品安全, 有机食品 消毒, 大肠杆菌, 毕赤氏酵母, 超声强化, 高压匀浆;Nanoemulsion, Carvacrol, Nanotechnology, Antimicrobial, Fresh cut, Food safety, Organic food, Organic vegetables, Sanitisation, Escherichia coli, Pichia pastoris, Ultrasonification, High pressure homogenisation

  • 34浏览

  • 0点赞

  • 0收藏

  • 2分享

  • 9下载

  • 0评论

  • 引用