CN113318701A - 去除土榨花生油中黄曲霉毒素b1的吸附剂及其制备方法 - Google Patents
去除土榨花生油中黄曲霉毒素b1的吸附剂及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种去除土榨花生油中黄曲霉毒素B1的吸附剂及其制备方法与使用方法,按重量分数计,其包括如下成分:滑石粉45%‑55%、白土25‑35%、硅藻土10‑15%、钙基膨润土5‑10%。制备步骤包括:添加酸液活化、添加氢氧化物溶液中和、灼烧、粉碎。使用时按比例与花生油混合、搅拌、分离即可得到成品花生油。本发明的方法制备得到的吸附剂吸附速度快,吸附性能强,能够有效去除花生油中的黄曲霉毒素类有害物质,大幅度提高花生油的安全性能,同时能够较好地保留花生油的物理化学性能,对花生油的脂肪酸组成没有影响,且操作简单,易学,吸附剂成本低廉,容易在中小企业和小作坊推广。
Description
技术领域
本发明涉及一种粮油安全技术领域,具体涉及一种黄曲霉毒素B1去除技术。
背景技术
近年来,“纯天然”和“原生态”成为部分消费者的追求,“土榨油”更是以其纯朴的外衣赢得了广大消费者的青睐。所谓“土榨油”,一般是由小作坊或中小型油脂生产企业用传统工艺压榨而得,该油仅经过简单的过滤和沉降处理,即打着“新鲜”“无添加”“无残留”的名头进行销售。深受普通消费者喜爱和推崇。殊不知,这样未经精炼和其他无害化处理手段处理的植物油,杂质多,易氧化变质,易霉变产生毒素,食品安全隐患大。其中尤以土榨花生油中“黄曲霉毒素B1”产生的危害最大。一些土榨花生油小作坊的花生油产品黄曲霉毒素B1容易检出超标。
目前国内外关于去除黄曲霉毒素的方法主要有化学法、生物法和物理法。化学法对加工设备的要求较高,投入相对较大,于小作坊而言,不易实现。而生物法因其操作难度相对较高,对小作坊这样的粗放式加工场所与素质相对较低的加工人员而言,也是很难实现。而物理法因其操作简单且成本相对较低更容易被广大土榨油小作坊业主所接受。
目前国内研究较多且发展较为成熟的物理去除黄曲霉毒素的物理方法为紫外辐照法,然而董海洲等研究发现,辐照对花生油中不饱和脂肪酸的影响很大,且与辐照时间密切相关。经辐照过的花生油在后期保藏方面很不理想。而我国的《食品安全法》《食品安全国家标准预包装食品标签通则》等法律法规明确规定,经辐照过的食品,必须在标签上明确标示“辐照食品”字样。而广大消费者对辐照食品有天然的排斥与抵触,不利于产品的销售。
因此,急需要研究出安全的、便捷的、可操作性强而且成本还要相对低廉的去除黄曲霉毒素的方法或产品,推广使用,以保障广大消费者食用油安全。利用吸附剂脱毒是近年来被广泛关注和重视的一种脱毒方法,有研究发现,有机和无机的吸附剂在饲料消毒方面比其他化学物理方法更加高效经济。
国内有报道一种用于去除花生油中黄曲霉毒素的吸附剂的制备方法,以龙眼树枝、荔枝树枝、甘蔗渣为原料混合粉碎后加入稻壳粉和碱性离子液体制备成活性炭,再将活性炭进行胺化处理,将胺化处理后的活性炭与壳聚糖复合制备成复合吸附剂。也有报道将单一型吸附剂用作油脂中黄曲霉毒素的吸附剂。但单一型吸附剂吸附效果有的不尽理想,有的价格相对昂贵,有的不适合用在液态食品中,有的不是食品接触材料不能用于食品的加工过程,有的会造成在食品中的残留而无法保障产品的质量。
发明内容
本发明的目的在于提供一种对黄曲霉毒素B1吸附效果好的,价格相对便宜又可用于食品的加工的一种复配型吸附剂。
为了达到上述目的本发明采用如下技术方案:
一种去除土榨花生油中黄曲霉毒素B1的吸附剂,按重量分数计,包括如下成分:
滑石粉45%-55%、白土25-35%、硅藻土10-15%、钙基膨润土5-10%。
进一步地,
所述滑石粉、白土、硅藻土、钙基膨润土的粒径均是40-100目。
一种去除土榨花生油中黄曲霉毒素B1的吸附剂的制备方法,滑石粉、硅藻土、钙基膨润土均是食品级的,白土是食品级活性白土,按比例把食品级的滑石粉、食品级活性白土、食品级硅藻土、食品级膨润土四种粉末材料混合,得到吸附剂。
一种去除土榨花生油中黄曲霉毒素B1的吸附剂的制备方法,包括如下步骤:
(1)按比例取滑石粉、白土、硅藻土、钙基膨润土,混合均匀;
(2)往步骤(1)的混合粉末添加酸液;充分混匀,活化;
(3)加入氢氧化物溶液中和,水洗至中性;
(4)灼烧;
(5)粉碎过筛。
进一步地,
所述酸液是体积分数为10%的磷酸或体积分数为20%的硫酸或体积分数为25%的盐酸;
按质量分数计,酸液的加入量是混合粉末20%-40%。
进一步地,
所述步骤(2)活化的操作是置于干燥箱中60-80℃活化40-60min。
进一步地,
所述步骤(3)中添加的氢氧化物溶液是氢氧化钠溶液或氢氧化钙溶液,加入氢氧化钠溶液或氢氧化钙溶液混匀20min后,反复水洗至中性。
进一步地,
所述步骤(4)灼烧的温度是550℃,灼烧2-4h。
进一步地,
所述步骤(5)粉碎过筛取40-100目的粉末备用。
一种使用吸附剂去除土榨花生油中黄曲霉毒素B1的方法,步骤包括:将土榨的花生油毛油按油:复配吸附剂=100:2-5的重量比例混合,充分搅拌15min以上,沉降24小时以上/离心式滤油机离心10min以上,上层花生油中黄曲霉毒素B1含量降到标准以下,得到可食用的成品花生油;
取出上层油层后,沉淀在下层的吸附剂对黄曲霉毒素B1的吸附能力未达到饱和可继续使用,利用仪器或黄曲霉毒素快检试剂盒对处理后的油进行检测,如黄曲霉毒素残留量超过15μg/kg,对黄曲霉毒素B1的吸附能力达到饱和;即需更换新的吸附剂或加入少量新的吸附剂继续使用。
本发明的优点包括:
1、采用该复配型吸附剂,对食用油中黄曲霉毒素B1吸附效果更好,且对油中的酸性物质和水分也有一定的吸附效果,没有产生显著的重金属残留。
2、所选用的材料均为GB 2760《食品安全国家标准食品添加剂使用标准》附录C中规定的食品工业用加工助剂,符合国家强制性标准要求,安全性有保障。
3、使用本发明的吸附剂用于土榨花生油的加工,可替换加工中过滤步骤,节约加工过程时间和设备成本。
4、几种材料混合后,采用酸洗,一方面可以去除材料中的一些可溶性杂质,避免加工过程中迁移到食用油中,另一方面,可活化配料中的白土等,增加其对黄曲霉毒素等有害物质的吸附性能。
5、经高温煅烧后,滑石粉部分脱水转化为硅酸镁,增加了对油品中游离酸和水分的吸附性能。
6、硅藻土和膨润土的加入,可以让几种固体粉末得到粘合,形成附着层,增加比表面积,降低材料在食用油中的残留,不会造成油中不溶性杂质超标,同时,也能减少滑石粉和白土对油脂中黄色素的吸附,保留花生油固有的色泽。
具体实施方式
下面将结合具体实施例来详细说明本发明,在此以本发明的示意性实施例及说明用来解释本发明,但并不作为对本发明的限定。
实施例1:将普通滑石粉、白土、硅藻土和膨润土(钙基)按50%:30%:10%:10%的重量比例混合均匀,取1000g,加入体积分数为20%的硫酸溶液300g,混匀。置于65℃的恒温干燥箱中活化50min,加入少许含4g氢氧化钙的水,混匀,反应20分钟后,反复用水洗至中性。再置于高温炉中于550℃将其灼烧4h,取出后粉碎过筛,取40-100目的粉末备用。
取含高浓度黄曲霉毒素B1的仅经过初滤的花生油10kg,加入上述复配型吸附剂200g,充分搅拌15min,静置沉降24小时,取出上层油层后,沉淀在下层的吸附剂对黄曲霉毒素的吸附能力未达到饱和的情况下,沉淀在下层的吸附剂可继续使用,判定方法为利用仪器或黄曲霉毒素快检试剂盒对处理后的油进行检测,如黄曲霉毒素残留量超过15μg/kg,即需更换新的吸附剂或加入少量新的吸附剂继续使用。
各项质量指标如表1。
表1 测试结果。
取出上层经处理的油层后,继续在容器中加入10kg上述含高浓度黄曲霉毒素B1的花生油,充分搅拌20min,静置沉降24小时,取上层油层进行测试。各项质量指标如表2。
表2 测试结果
实施例2:与实施例1不同的是选择含较低浓度黄曲霉毒素B1的仅经过初滤的花生油10kg,加入实施例1中制备的复配型吸附剂200g,充分搅拌15min,静置沉降24小时,取上层油层进行测试(一次吸附),如黄曲霉毒素B1的检测结果合格,则取出上层经处理的油层后,继续在容器中加入10kg上述含低浓度黄曲霉毒素B1的花生油,充分搅拌20min,静置沉降24小时,取上层油层进行测试(二次吸附),如黄曲霉毒素B1的检测结果仍然合格,则继续取出上层经处理的油层后,继续在容器中加入10kg上述含低浓度黄曲霉毒素B1的花生油,充分搅拌25min,静置沉降24小时,取上层油层进行测试(三次吸附),重复以上操作,直至处理后油品黄曲霉毒素B1的含量接近或超过国家标准要求。各测试结果如表3.
表3 测试结果
实施例3:与实施例1不同的是加入吸附剂后,不用搅拌静置的方法,而改用离心式滤油机离心10min,取上层油液进行测试。如黄曲霉毒素B1检测结果合格,则取出上层经处理的油层后,继续在容器中加入10kg相同的含高浓度黄曲霉毒素B1的花生油,将底层吸附剂与之混匀后,用离心式滤油机离心10min,取上层油液进行测试(二次吸附),重复以上操作,直至黄曲霉毒素B1检测结果接近不合格为止。测试结果如表4.
表4 测试结果
实施例4:与实施例3不同的是选择的是与实施例2相同的含低浓度黄曲霉毒素B1的花生油进行测试。测试结果如表5.
表5测试结果
实施例5:直接购买食品级的滑石粉、食品级活性白土、食品级硅藻土、食品级膨润土(钙基)四种粉末材料,过筛,取颗粒在40-100目的粉末,将滑石粉、白土、硅藻土和膨润土(钙基)按50%:30%:10%:10%混合均匀,制成复配型物理吸附剂。后续步骤同实施例1。测试结果如表6.
表6 测试结果
实施例6:与实施例1不同的是加入300g吸附剂。测试结果如表7所示。
表7 测试结果
本发明优点有:
1.采用了滑石粉、白土、硅藻土、膨润土(钙基)作为吸附材料;购置食品级的材料进行复配,可以直接用于处理油;购置普通的材料经过酸洗、碱洗、煅烧、粉碎等工艺,可将普通材料中的杂质除去,达到食品级要求,同时不影响甚至提高其对黄曲霉毒素的吸附性能。
2.采用该复配型吸附剂,对食用油中黄曲霉毒素B1吸附效果更好,对黄曲霉毒素B1的吸附容量可达到10mg/kg。且对油中的酸性物质和水分也有一定的吸附效果,更重要的是,没有产生显著的重金属残留。
3.所选用的材料均为GB 2760《食品安全国家标准食品添加剂使用标准》附录C中规定的食品工业用加工助剂,符合国家强制性标准要求,安全性有保障。
4.使用本发明的吸附剂用于土榨花生油的加工,可替换加工中过滤步骤,不会给加工过程增加时间和设备成本。
5.本复配吸附剂几种材料均容易购得,且价格相对低廉。
6.本发明的方法制备得到的吸附剂吸附速度快,吸附性能强,沉降后黄曲霉毒素含量低于20μg/kg。能够有效去除花生油中的黄曲霉毒素类有害物质,大幅度提高花生油的安全性能,同时能够较好地保留花生油的物理化学性能,对花生油的脂肪酸组成没有影响,且操作简单,易学,吸附剂成本低廉,容易在中小企业和小作坊推广。
以上对本发明实施例所提供的技术方案进行了详细介绍,本文中应用了具体个例对本发明实施例的原理以及实施方式进行了阐述,以上实施例的说明只适用于帮助理解本发明实施例的原理;同时,对于本领域的一般技术人员,依据本发明实施例,在具体实施方式以及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。
Claims (10)
1.一种去除土榨花生油中黄曲霉毒素B1的吸附剂,其特征在于:
按重量分数计,包括如下成分:
滑石粉45%-55%、白土25-35%、硅藻土10-15%、钙基膨润土5-10%。
2.根据权利要求1所述的去除土榨花生油中黄曲霉毒素B1的吸附剂,其特征在于:
所述滑石粉、白土、硅藻土、钙基膨润土的粒径均是40-100目。
3.一种如权利要求1-2任一所述的去除土榨花生油中黄曲霉毒素B1的吸附剂的制备方法,其特征在于:
滑石粉、硅藻土、钙基膨润土均是食品级的,白土是食品级活性白土,按比例把食品级的滑石粉、食品级活性白土、食品级硅藻土、食品级膨润土四种粉末材料混合,得到吸附剂。
4.一种如权利要求1-2任一所述的去除土榨花生油中黄曲霉毒素B1的吸附剂的制备方法,其特征在于:
包括如下步骤:
(1)按比例取滑石粉、白土、硅藻土、钙基膨润土,混合均匀;
(2)往步骤(1)的混合粉末添加酸液;充分混匀,活化;
(3)加入氢氧化物溶液中和,水洗至中性;
(4)灼烧;
(5)粉碎过筛。
5.根据权利要求4所述的去除土榨花生油中黄曲霉毒素B1的吸附剂的制备方法,其特征在于:
所述酸液是体积分数为10%的磷酸或体积分数为20%的硫酸或体积分数为25%的盐酸;
按质量分数计,酸液的加入量是混合粉末20%-40%。
6.根据权利要求4所述的去除土榨花生油中黄曲霉毒素B1的吸附剂的制备方法,其特征在于:
所述步骤(2)活化的操作是置于干燥箱中60-80℃活化40-60min。
7.根据权利要求4所述的去除土榨花生油中黄曲霉毒素B1的吸附剂的制备方法,其特征在于:
所述步骤(3)中添加的氢氧化物溶液是氢氧化钠溶液或氢氧化钙溶液,加入氢氧化钠溶液或氢氧化钙溶液混匀20min后,反复水洗至中性。
8.根据权利要求4所述的去除土榨花生油中黄曲霉毒素B1的吸附剂的制备方法,其特征在于:
所述步骤(4)灼烧的温度是550℃,灼烧2-4h。
9.根据权利要求4所述的去除土榨花生油中黄曲霉毒素B1的吸附剂的制备方法,其特征在于:
所述步骤(5)粉碎过筛取40-100目的粉末备用。
10.一种使用如权利要求1所述的吸附剂去除土榨花生油中黄曲霉毒素B1的方法,其特征在于:
步骤包括:将土榨的花生油毛油按油:复配吸附剂=100:2-5的重量比例混合,充分搅拌15min以上,沉降24小时以上/离心式滤油机离心10min以上,上层花生油中黄曲霉毒素B1含量降到标准以下,得到可食用的成品花生油;
取出上层油层后,沉淀在下层的吸附剂对黄曲霉毒素B1的吸附能力未达到饱和可继续使用,利用仪器或黄曲霉毒素快检试剂盒对处理后的油进行检测,如黄曲霉毒素残留量超过15μg/kg,对黄曲霉毒素B1的吸附能力达到饱和;即需更换新的吸附剂或加入少量新的吸附剂继续使用。
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