CN109197899A - 一种新型液态纳米银抑菌剂及其制备方法和应用 - Google Patents
一种新型液态纳米银抑菌剂及其制备方法和应用 Download PDFInfo
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Abstract
本发明公开了一种新型液态纳米银抑菌剂,其组成配方为:每32mL新型液态纳米银抑菌剂中,含AgNO3 0.00208g,CTAB 0.015g,硼氢化钠0.00015g,乙醇2mL,水30mL。本发明同时提供了该新型液态纳米银抑菌剂的制备方法和应用,可应用于鲜花、水果、蔬菜的抑菌保鲜和抑菌洗手液、香皂、肥皂、洗衣液和女性护理液的生产中。本发明操作简单,制备周期短,可高效生产,得到的产品抑菌效果具有广谱性,抑菌效果持久显著,应用十分广泛。
Description
技术领域
本发明涉及一种抑菌剂,尤其是一种新型液态纳米银抑菌剂及其制备方法和应用。
背景技术
纳米银凭借其良好的导电性,表面效应,量子尺寸效应等特点在催化,生物,医疗等领域应用广泛。纳米银作为抑菌材料,相比传统的高温灭菌,低温灭菌,抗生素等而言具有广谱杀菌,无耐药性,持续时间久等优势。纳米银主要制备方法有氧化还原法、电化学还原法、光化学还原法等,其在抑制大肠杆菌的抗菌试验表现出了一定效果,获得高效、广谱的纳米银抗菌剂是其在生产生活中广泛应用的基础。本发明旨在提供一种新型液态纳米银抑菌剂及其制备方法,可以得到有高效、广谱杀菌效果的纳米银杀菌剂,为果蔬保鲜、抑菌洗手液等提供良好的抑菌材料。
发明内容
本发明的目的在于提供一种新型液态纳米银抑菌剂及其制备方法和应用。
为了解决上述问题,本发明提供一种新型液态纳米银抑菌剂,其组成配方为:每32mL新型液态纳米银抑菌剂中,含AgNO3 0.00208g,CTAB 0.015g,硼氢化钠 0.00015g,乙醇2mL,水30mL。
本发明同时提供了该种新型液态纳米银抑菌剂的制备方法,包括以下步骤:
称取0.1g AgNO3溶于120mL水;0.15g CTAB溶于20mL乙醇,0.1g 硼氢化钠溶于20mL水中得到母液备用;取2.5mL AgNO3溶液、27.5mL水和2mL CTAB乙醇溶液混合均匀,置于恒温搅拌器上升温搅拌,待温度升至40℃时,加入30μL硼氢化钠溶液,在此温度下保持5分钟,继续升温至50℃,恒温搅拌25分钟,即得该新型液态纳米银抑菌剂。
本发明同时提供了该种新型液态纳米银抑菌剂的应用,可用于鲜花、水果、蔬菜的抑菌保鲜和抑菌洗手液、香皂、肥皂、洗衣液和女性护理液的生产中。
本发明有以下优点:操作简单,制备周期短,可应用于高效生产中;得到的产品抑菌效果具有广谱性,抑菌效果持久显著;应用十分广泛,可应用于鲜花、水果、蔬菜的抑菌保鲜和抑菌洗手液、香皂、肥皂、洗衣液和女性护理液的生产中。
附图说明
图1 新型液态纳米银对枯草芽孢杆菌的抑菌效果观察。
图2 新型液态纳米银抑菌剂对枯草芽孢杆菌的最小抑菌浓度。
图3 CTAB用量对合成的液态纳米银抑菌效果的影响。
图4 硼氢化钠溶液用量对合成的液态纳米银抑菌效果的影响。
具体实施方式
实施例1
一种新型液态纳米银广谱杀菌剂的制备方式,依次进行以下步骤:
称取0.1g AgNO3溶于120mL水;0.15g CTAB溶于20mL乙醇,0.1g 硼氢化钠溶于20mL水中得到母液备用;取2.5mL AgNO3溶液、27.5mL水和2mL CTAB乙醇溶液混合均匀,置于恒温搅拌器上升温搅拌,待温度升至40℃时,加入30μL硼氢化钠溶液,在此温度下保持5分钟,继续升温至50℃,恒温搅拌25分钟,即得该新型液态纳米银抑菌剂。
实施例2
利用新型液态纳米银广谱杀菌剂制备果蔬保鲜剂,依次进行以下步骤:
称取0.1g AgNO3溶于120mL水;0.15g CTAB溶于20mL乙醇,0.1g 硼氢化钠溶于20mL水中得到母液备用;取2.5mL AgNO3溶液、27.5mL水和2mL CTAB乙醇溶液混合均匀,置于恒温搅拌器上升温搅拌,待温度升至40℃时,加入30μL硼氢化钠溶液,在此温度下保持5分钟,继续升温至50℃,恒温搅拌25分钟,得到新型液态纳米银抑菌剂;加入山梨酸钾、抗坏血酸、生长抑制剂等组分,混合均匀,即得果蔬保鲜剂。
实施例3
利用新型液态纳米银广谱杀菌剂制备抑菌洗手液,依次进行以下步骤:
称取0.1g AgNO3溶于120mL水;0.15g CTAB溶于20mL乙醇,0.1g 硼氢化钠溶于20mL水中得到母液备用;取2.5mL AgNO3溶液、27.5mL水和2mL CTAB乙醇溶液混合均匀,置于恒温搅拌器上升温搅拌,待温度升至40℃时,加入30μL硼氢化钠溶液,在此温度下保持5分钟,继续升温至50℃,恒温搅拌25分钟,得到新型液态纳米银抑菌剂,加入增稠剂10g、色素1g、香精5g,表面活性剂CMC-Na 30g,水452mL,混合均匀,即得抑菌洗手液。
实施例4
利用新型液态纳米银广谱杀菌剂制备抑菌肥皂,依次进行以下步骤:
称取0.1g AgNO3溶于120mL水;0.15g CTAB溶于20mL乙醇,0.1g 硼氢化钠溶于20mL水中得到母液备用;取2.5mL AgNO3溶液、27.5mL水和2mL CTAB乙醇溶液混合均匀,置于恒温搅拌器上升温搅拌,待温度升至40℃时,加入30μL硼氢化钠溶液,在此温度下保持5分钟,继续升温至50℃,恒温搅拌25分钟,得到新型液态纳米银抑菌剂,加入到高级脂肪酸300g中混匀,加入NaCl、色素、香精、表面活性剂、发泡剂,混合均匀,得抑菌肥皂。
实施例5
本发明中的新型液态纳米银对枯草芽孢杆菌的抑菌效果试验,按照以下步骤进行:
配制LB培养基150mL 2份,向其中1份培养基中加入20µg/mL的液态纳米银溶液25mL,灭菌;倒平板,接种1%的枯草芽孢杆菌菌液10μL,37℃培养16h后,观察抑菌情况,结果如图1所示。
从图1中可以看出液态纳米银有高效抑菌的效果。
实施例6
本发明中的新型液态纳米银对枯草芽孢杆菌的最小抑菌浓度试验,按照以下步骤进行:
配制LB培养基150mL 5份,向其中4份培养基中分别加入3µg/mL、8µg/mL、15µg/mL、20µg/mL的液态纳米银溶液25mL,灭菌;倒平板,接种1%的枯草芽孢杆菌菌液10μL,37℃培养16h后,观察抑菌情况,结果如图2所示。
从图2中可以看出,浓度为20µg/mL的液态纳米银抑菌效果最佳。
实施例7
CTAB用量对合成液态纳米银的影响试验,按照以下步骤进行:
分别称取0.1g、0.15 g、0.20 g CTAB溶于20mL乙醇中,其他条件不变,制备液态纳米银;取20µg/mL的液态纳米银溶液25mL,加入到150mL LB培养基中,接种枯草芽孢杆菌,观察抑菌效果。
由图3可以看出,0.15g CTAB为最优CTAB用量。
实施例8
硼氢化钠溶液用量对合成液态纳米银的影响试验,按照以下步骤进行:
硼氢化钠溶液用量分别设为10μL、20μL、30μL,其他条件不变,制备液态纳米银。取20µg/mL的液态纳米银溶液25mL,加入到150mL LB培养基中,接种枯草芽孢杆菌,观察抑菌效果。
由图4可以看出,10μL为该条件下的最优硼氢化钠溶液用量。
实施例9
搅拌时间对合成液态纳米银的影响试验,按照以下步骤进行:
搅拌时间分别设置为20分钟、30分钟、40分钟、50分钟,其他条件不变,制备液态纳米银;取20µg/mL的液态纳米银溶液25mL,加入到150mL LB培养基中,接种枯草芽孢杆菌,观察抑菌效果。
实验表明30分钟为该条件下的最优搅拌时间。
实施例10
乙醇用量对液态纳米银合成的影响试验,按照以下步骤进行:
分别称取0.15g CTAB溶于10mL、15mL、20mL、25mL乙醇中,其他条件不变,制备液态纳米银。取20µg/mL的液态纳米银溶液25mL,加入到150mL LB培养基中,接种枯草芽孢杆菌,观察抑菌效果。
实验表明20mL的乙醇为该条件下的最适用量。
Claims (3)
1.一种新型液态纳米银抑菌剂,其组成配方为:每32mL新型液态纳米银抑菌剂中,含AgNO3 0.00208g,CTAB 0.015g,硼氢化钠 0.00015g,乙醇2mL,水30mL。
2.如权利要求1所述新型液态纳米银抑菌剂的制备方法,其特征在于包括以下步骤:称取0.1g AgNO3溶于120mL水;0.15g CTAB溶于20mL乙醇,0.1g硼氢化钠溶于20mL水中得到母液备用;取2.5mL AgNO3溶液、27.5mL水和2mL CTAB乙醇溶液混合均匀,置于恒温搅拌器上升温搅拌,待温度升至40℃时,加入30μL硼氢化钠溶液,在此温度下保持5分钟,继续升温至50℃,恒温搅拌25分钟,即得该新型液态纳米银抑菌剂。
3.如权利要求1所述新型液态纳米银抑菌剂的应用范围,其特征在于其可以可用于鲜花、水果、蔬菜的抑菌保鲜和抑菌洗手液、香皂、肥皂、洗衣液和女性护理液的生产中。
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