CN115141776A - 一种利用复合益生菌高效去除甲醛的方法 - Google Patents
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Abstract
本发明具体涉及一种利用复合益生菌高效去除甲醛的方法。本发明通过对目前市场上可直接购买得到的多种益生菌菌株进行试验筛选,发现有少部分的益生菌菌株具有去除甲醛的效果,但单个益生菌菌株的去除效果均不佳,应用前景较差,故本发明进一步研究不同益生菌菌株的复合益生菌剂的去除甲醛效果,最后发现利用益生菌菌株Lactobacillus Plantarum Subsp.Plantarum DSM 20174和Gluconacetobacter xylinus DSM 6513以19:1混合所制备的复合益生菌剂均有非常好的去除甲醛的效果,且制造成本低,有较好的市场应用前景。
Description
技术领域
本发明具体涉及一种利用复合益生菌高效去除甲醛的方法。
背景技术
甲醛是室内空气中常见的污染物,在环境中颇为稳定,释放周期长。居室装饰材料和家具中的胶合板、纤维板、刨花板等人造板材中含有大量以甲醛为主的脲醛树脂,各类油漆、涂料中都含有甲醛。室内甲醛的超标会引起呼吸道疾病、免疫力下降、白血病等,对人体健康有较大危害,甲醛在室内达到一定浓度时,人就有不适感。大于0.08 m3的甲醛浓度可引起眼红、眼痒、咽喉不适或疼痛、声音嘶哑、喷嚏、胸闷、气喘、皮炎等。新装修的房间甲醛含量较高,是众多疾病的主要诱因。
目前绝大多数室内除甲醛的方法采用的仍是自然通风法,但该方法受室外天气及环境的影响较大。此外,还采用活性炭吸附法、植物净化法、光催化氧化技术等,而这些处理方法除室内甲醛的速度慢,且成本高,还可能会产生二次污染。
甲醛作为内源代谢物存在与生物中,现研究表明,有些微生物具有甲醛代谢途径,在消除甲醛方面具有潜在的应用价值,是目前研究的热门方向。如授权号为CN112143665B的中国专利公开了采用特定的活化甲基杆菌、假单胞菌和沼泽红假单胞菌用于室内甲醛的降解;授权公告号为CN 103087952 B的中国专利公开了一种特定的耶氏副球菌(Paracoccus yeei),其能够高效降解甲醛;授权公告号为CN 102181385 B的中国专利利用假单胞菌IOFA1的代谢产物(甲醛降解酶)来进行甲醛处理等。
上述采用微生物处理甲醛的微生物菌剂均为经过大量实验筛选、培育出的特定的对甲醛有降解效果的菌株,但是不确定将上述微生物菌剂应用于室内的甲醛降解时,是否会对人体产生危害。
益生菌(Probiotics)是一类对宿主有益的活性微生物,是定植于人体肠道、生殖系统内,能产生确切健康功效从而改善宿主微生态平衡、发挥对肠道有益作用的活性有益微生物的总称。人体、动物体内有益的细菌或真菌主要有:酪酸梭菌、乳酸菌、双歧杆菌、嗜酸乳杆菌、放线菌、酵母菌等。然而目前市面上对利用益生菌高效去除甲醛的产品较少。
发明内容
本发明的目的是为了克服现有技术存在的缺点和不足,而提供一种利用复合益生菌高效去除甲醛的方法。
本发明所采取的技术方案如下: 一种利用复合益生菌高效去除甲醛的方法,包括以下步骤:
(1)将Lactobacillus Plantarum Subsp. Plantarum DSM 20174,Gluconacetobacter xylinus DSM 6513分别采用MRS 培养基培养繁殖至高密度状态,然后以19:1混合,制得复合益生菌剂;
(2)将步骤(1)制备得到的复合益生菌剂分散至室内,进行空气处理。
优选的,所述MRS 培养基的组成为酪蛋白胨 10.0质量份,牛肉膏 10.0质量份,酵母粉 5.0质量份,葡萄糖 5.0质量份,乙酸钠 5.0质量份,柠檬酸二铵 2.0质量份,Tween80 1.0质量份,K2HPO4 2.0质量份,MgSO4.7H2O 0.2质量份,MnSO4.H2O 0.05质量份,CaCO320.0质量份,琼脂 15.0质量份,蒸馏水1000质量份,pH为 6.8。
优选的,步骤(1)中为置于150 r/min的振荡条件、25℃的恒温条件的培养箱中振荡3 d,进行培养繁殖。
优选的,步骤(2)中为利用雾化器将复合益生菌剂分散至室内。
本发明的有益效果如下:本发明通过对目前市场上可直接购买得到的多种益生菌菌株进行试验筛选,发现有少部分的益生菌菌株具有去除甲醛效果,但单个益生菌菌株的去除效果均不佳,应用前景较差,故本发明进一步研究不同益生菌菌株的复合益生菌剂的去除甲醛效果,最后发现利用益生菌菌株Lactobacillus Plantarum Subsp. PlantarumDSM 20174和Gluconacetobacter xylinus DSM 6513以19:1混合所制备的复合益生菌剂均有非常好的去除甲醛的效果,且制造成本低,有较好的市场应用前景。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,根据这些附图获得其他的附图仍属于本发明的范畴。
图1为采用Lactobacillus Plantarum Subsp. Plantarum DSM 20174和Gluconacetobacter xylinus DSM 6513以不同混合所制备的复合益生菌剂用于去除甲醛的效果的对比;
图2为Lactobacillus Plantarum Subsp. Plantarum DSM 20174和Gluconacetobacter xylinus DSM 6513以19:1所制备的复合益生菌剂用于去除不用甲醛含量的试样的效果。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明作进一步地详细描述。
实施例1:
复合菌液样品的制备:将 Lactobacillus Plantarum Subsp. Plantarum DSM20174,Gluconacetobacter xylinus DSM 6513分别在MRS 培养基(酪蛋白胨 10.0g,牛肉膏 10.0g,酵母粉 5.0g,葡萄糖 5.0g,乙酸钠 5.0g,柠檬酸二铵 2.0g,Tween 80 1.0g,K2HPO4 2.0g,MgSO4.7H2O 0.2g,MnSO4.H2O 0.05g,CaCO3 20.0g,琼脂 15.0g,蒸馏水 1.0L,pH 6.8。)置于振荡(150 r/min)恒温(25℃)培养箱中振荡3 d,繁殖至高密度状态(OD600>1),随后如表1所示的不同的质量比例混合,制得复合益生菌剂。
(2)利用复合菌剂除甲醛的步骤:将复合菌液样品,置于室内,利用雾化器进行空气的处理15分钟后,并利用恒流采样器进行空气中甲醛浓度的测定,采集流量0.5 L/min,每天操作一次,计算第一天、第二天、第三天和第六天的甲醛去除率。如图1所示,比例1的甲醛去除率显著高于比例2-4的甲醛去除率。
实施例2:
(1)复合菌液样品的制备:将 Lactobacillus Plantarum Subsp. Plantarum DSM20174,Gluconacetobacter xylinus DSM 6513分别在MRS 培养基(酪蛋白胨 10.0g,牛肉膏 10.0g,酵母粉 5.0g,葡萄糖 5.0g,乙酸钠 5.0g,柠檬酸二铵 2.0g,Tween 80 1.0g,K2HPO4 2.0g,MgSO4.7H2O 0.2g,MnSO4.H2O 0.05g,CaCO3 20.0g,琼脂 15.0g,蒸馏水 1.0L,pH 6.8。)置于振荡(150 r/min)恒温(25℃)培养箱中振荡3 d,繁殖至高密度状态(OD600>1),随后以19:1 的质量比例混合,制得复合益生菌剂。
(2)利用复合菌剂除甲醛的步骤:将复合菌液样品,置于室内,利用雾化器进行空气的处理15分钟后,并利用恒流采样器进行空气中甲醛浓度的测定,采集流量0.5L/min,每天操作一次。对装有不同装修材料和家具的房间的室内空气进行处理,每个房间的室内空气初始甲醛含量均有所不同,处理结果如图2所示。其中,试样1的原始甲醛的浓度为0.143mg/m3,使用1天后,甲醛浓度将为0.088mg/m3,使用第二天后,甲醛的浓度将至0.067mg/m3,即已符合室内环境标准值。经过一周的处理,甲醛的浓度降至0.044 mg/m3,甲醛去除率为70%。试样2的原始甲醛的浓度为0.123 mg/m3,本产品使用1天后,甲醛浓度将为0.086mg/m3,使用第二天后,甲醛的浓度将至0.058mg/m3,即已符合室内环境标准值。经过一周的处理,甲醛的浓度降至0.019 mg/m3,甲醛去除率为84%。由以上可见,本发明提供的复合菌剂去除室内甲醛效果非常好。
以上所揭露的仅为本发明较佳实施例而已,当然不能以此来限定本发明之权利范围,因此依本发明权利要求所作的等同变化,仍属本发明所涵盖的范围。
Claims (4)
1.一种利用复合益生菌高效去除甲醛的方法,其特征在于包括以下步骤:
(1)将Lactobacillus Plantarum Subsp. Plantarum DSM 20174,Gluconacetobacter xylinus DSM 6513分别采用MRS 培养基培养繁殖至高密度状态,然后以19:1混合,制得复合益生菌剂;
(2)将步骤(1)制备得到的复合益生菌剂分散至室内,进行空气处理。
2. 根据权利要求1所述的利用复合益生菌高效去除甲醛的方法,其特征在于:所述MRS培养基的组成为酪蛋白胨 10.0质量份,牛肉膏 10.0质量份,酵母粉 5.0质量份,葡萄糖5.0质量份,乙酸钠 5.0质量份,柠檬酸二铵 2.0质量份,Tween 80 1.0质量份,K2HPO4 2.0质量份,MgSO4.7H2O 0.2质量份,MnSO4.H2O 0.05质量份,CaCO3 20.0质量份,琼脂 15.0质量份,蒸馏水1000质量份,pH为 6.8。
3. 根据权利要求1所述的利用复合益生菌高效去除甲醛的方法,其特征在于:步骤(1)中为置于150 r/min的振荡条件、25℃的恒温条件的培养箱中振荡3 d,进行培养繁殖。
4.根据权利要求1所述的利用复合益生菌高效去除甲醛的方法,其特征在于:步骤(2)中为利用雾化器将复合益生菌剂分散至室内。
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