CN109259086B - 可调节便秘的营养大米及其制备方法 - Google Patents
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- CN109259086B CN109259086B CN201810859209.1A CN201810859209A CN109259086B CN 109259086 B CN109259086 B CN 109259086B CN 201810859209 A CN201810859209 A CN 201810859209A CN 109259086 B CN109259086 B CN 109259086B
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Abstract
本发明公开了一种可调节便秘的营养大米,其原料由以下重量含量的成分组成:0.5%~3.0%的火龙果寡糖、0.5%~3.0%的魔芋葡甘聚糖、0.5%~1.5%佛手多糖粉、1.0%~4.0%山药纤维素粉、0.5%~3.0%苹果果胶粉、0.5%~5.0%的卷心菜纤维素粉、0.5%~3.0%菠萝半纤维素粉、1.5%~4.0%的大豆膳食纤维、1.0%~4.0%的低聚果糖、10%~15%玉米淀粉,余量为大米粉。本发明还同时公开了上述营养大米的制备方法。该大米能调节肠道健康,促进肠道蠕动,对便秘患者具有很好的调节作用。
Description
技术领域
本发明涉及食品加工领域,主要涉及一种可调节便秘的营养大米及其制备方法。
背景技术
便秘是一种常见症状,表现为大便在肠道中停留时间过长,以致粪便中水分被肠道吸收,变得过分干硬,难以排泄,正常的排便频率被破坏。随着现代饮食结构的改变和精神因素、社会环境的影响,人们对于高脂肪和高蛋白食物摄入量增加,从而引起代谢疾病、慢性便秘等。
预防便秘的主要措施是在饮食中增加膳食纤维的摄入量。膳食纤维能够吸收体内的水分,增加粪便的体积,改善肠道菌群,而同时肠道菌群可以酵解膳食纤维,刺激肠道蠕动,利于排便。
膳食纤维是一种非淀粉多糖,不能被人体消化酶分解,也是维持人体健康不可缺少的碳水化合物。膳食纤维,不被消化吸收,热量低,具有降低血糖,排毒通便的作用。寡糖是由2-10个单糖通过糖苷键连接形成直链或者支链的低分子聚合物。目前已知的功能性寡糖有大豆低聚糖、低聚半乳糖、低聚龙胆糖等。寡糖不能被胃酸和机体分泌的酶水解,因而小肠不能消化利用,但寡糖进入大肠后可成为有益菌食物,促进有益菌繁殖。火龙果含丰富的蛋白质,氨基酸,矿物元素,维生素和脂肪酸等营养成分,同时还含有膳食纤维,类黄酮,植物多糖和苷类化合物等多种功能性物质,在排毒解毒,预防便秘等方面具有良好的作用。
目前,已出现具备多种润肠通便的产品,例如申请号201711084526.2,201610251711.5,201510828262.1,201610289379.1等。但是大部分中含有决明子,大黄等刺激性泻剂,刺激肠壁内神经,长期服用容易造成药物依赖,对人体健康不利。
发明内容
本发明要解决的技术问题是提供一种绿色环保的可调节便秘的营养大米及其制备方法;该大米能调节肠道健康,促进肠道蠕动,对便秘患者具有很好的调节作用。
为了解决上述技术问题,本发明提供一种可调节便秘的营养大米,其原料由以下重量含量的成分组成:
0.5%~3.0%的火龙果寡糖、0.5%~3.0%的魔芋葡甘聚糖、0.5%~1.5%佛手多糖粉、1.0%~4.0%山药纤维素粉、0.5%~3.0%苹果果胶粉、0.5%~5.0%的卷心菜纤维素粉、0.5%~3.0%菠萝半纤维素粉、1.5%~4.0%的大豆膳食纤维、1.0%~4.0%的低聚果糖、10%~15%玉米淀粉,余量为大米粉。
作为本发明的可调节便秘的营养大米的改进,火龙果寡糖的提取方法为包括以下步骤:
1.1、将火龙果的果肉切成3~5mm厚的果片,先于80~90℃烘干120~150分钟,然后粉碎至过200~300目的筛,得果粉;
1.2、在100g果粉中加入300~500ml去离子水混匀,然后用0.03~0.05mol/L的过氧化氢水溶液(用量约为50~200ml)进行清洗,再离心(3000~4000r/min的转速下离心3~5min),得沉淀Ⅰ;
先在所得的沉淀Ⅰ中加入200~300ml水然后调节pH至6.2~6.3(用磷酸缓冲液进行调节),再加入酶活力分别为2000±200IU、3000±300IU的α-1,4和α-1,6葡萄糖苷酶于37±0.5℃下水解40±2min,然后离心(3000~4000r/min的转速下离心8~10min);得沉淀Ⅱ;
先将沉淀Ⅱ与200~300ml蒸馏水混合,然后调节pH至7.5~7.7(用0.05M的碳酸氢钠缓冲液进行调节),再加入酶活力分别为4000±400IU、2000±200IU、3500±350IU的α-半乳糖苷酶、α-阿拉伯糖苷酶、α-甘露糖苷酶于42±0.5℃条件下水解35±3min;所得水解液离心后(3000~4000r/min的转速下离心3~5min)弃去沉淀,上清液在旋转蒸发仪上浓缩至原体积(即,上清液的体积)的9~11%(较佳为10%),得浓缩液;
1.3、将上述浓缩液冷冻干燥(-45~-59℃干燥8~10小时),取400~600mg溶于1~2ml蒸馏水中进行上样,使用200目硅胶装填的层析柱以正丁醇-乙酸-水=1﹕1.25﹕2.75(v/v/v)作为流动相进行洗脱,流速为1.5±0.2ml/min,直至洗脱液中无糖检出停止洗脱;将收集液(收集的洗脱液)浓缩至原体积的9~11%,冷冻干燥(-45~-59℃干燥8~10小时)后,得到火龙果寡糖。
作为本发明的可调节便秘的营养大米的进一步改进,火龙果寡糖的提取方法的步骤1.2为:
采用过氧化氢水溶液进行清洗的次数为2~3次,每次清洗时,过氧化氢水溶液的用量为50±10ml,每次清洗后进行离心处理(于3000±500r/min转速下离心4±1min)。
作为本发明的可调节便秘的营养大米的进一步改进,苹果果胶粉的制备方法为包括以下步骤:
将苹果(新鲜苹果)用清水冲洗干净、晾干(表面不再滴水为止)后去核切块;然后置于榨汁机中压榨,将所得的果渣干燥(于80~90℃干燥60~80分钟),粉碎(粉碎至能过80~100目的筛),得苹果粉;
将所得的苹果粉与柠檬酸提取液按料液比1g/6~8ml(较佳为1g/7ml)混合后于65±5℃浸提,浸提时间为70±10min;所述柠檬酸提取液是质量浓度为0.5%~0.8%的柠檬酸水溶液;
浸提结束后抽滤(立即抽滤),在滤液中加入等体积量的95%(体积%)乙醇溶液,静置90±10min后离心(于4000±500r/min转速下离心6±1min);将离心得到的沉淀物干燥(置于65±5℃鼓风干燥箱中干燥至恒重),得到苹果果胶粉。
作为本发明的可调节便秘的营养大米的进一步改进,菠萝半纤维素粉的制备方法为包括以下步骤:
将菠萝(新鲜菠萝)洗净去皮切块后进行压榨,所得的果渣干燥(80~90℃干燥60~80分钟),粉碎(过80~100目的筛),得菠萝粉;
按照1g/9~11ml(较佳为1g/10ml)的料液比,在菠萝粉中加入质量浓度为4~6%(较佳为5%)的NaOH水溶液于70±5℃浸提3±0.5h,然后过滤;
将所得的滤液调节pH为4.0±0.2(用盐酸溶液进行调节),倒入(缓慢倒入,在1~2分钟内完成倒入)至95%(体积%)乙醇溶液中,所述滤液与95%乙醇溶液的体积比为1﹕2~4;然后静置60~90分钟从而产生絮状沉淀,再离心(于4000±500r/min离心5±1min);将离心得到的沉淀物干燥(置于65±5℃鼓风干燥箱中干燥至恒重),得到菠萝半纤维素粉。
作为本发明的可调节便秘的营养大米的进一步改进,佛手多糖的制备方法为包括以下步骤:
将佛手洗净切成2~3毫米的薄片,然后干燥(于80~90℃干燥60~80分钟),粉碎(过80-100目的筛),得佛手粉;
按照1g/1.5~2.5ml(较佳为1g/2ml)的料液比,将佛手粉加入至水中,于40±5℃浸提60±5min,过滤得到滤液,将滤液浓缩至原体积的45~55%(较佳为50%),按体积比1:0.8~1.2(较佳为1﹕1)加入(缓慢加入,在1~2分钟内完成加入)至95%(体积%)乙醇溶液中,静置50±5min从而产生絮状沉淀,离心(4000±400r/min条件下离心5±1min),所得沉淀物干燥(置于55±5℃鼓风干燥箱中干燥至恒重),得到佛手多糖粉。
作为本发明的可调节便秘的营养大米的进一步改进,卷心菜纤维素粉的制备方法为包括以下步骤:
将卷心菜(新鲜卷心菜)洗净后晾干(即,不再滴水为止),然后切成10±2mm宽的长条状,得条状卷心菜;将条状卷心菜先干燥(置于40~50℃的热风干燥)至含水率15~20%(质量%),然后真空冷冻干燥至水分含量≤5%(于-45~-60℃、0.05kPa的真空度下干燥),粉碎(粉碎至粒径80~100目),得卷心菜纤维素粉。
作为本发明的可调节便秘的营养大米的进一步改进,山药纤维素粉的制备方法为包括以下步骤:
将新鲜山药洗净、去皮,然后切成5±1mm厚的山药片,先干燥(50~60℃的热风干燥)直至含水率10%~15%(质量%),然后真空冷冻干燥(于-45~-60℃、0.05kPa的真空度下干燥)至水分含量≤2%(质量%),再粉碎(粒径80~100目),得山药纤维素粉。
本发明还同时提供了上述可调节便秘的营养大米的制备方法,包括以下步骤:
1)、将原料与水按照100g/30~35ml的料液比均匀搅拌混合,得到混合物;
2)、将混合物利用螺杆制粒机制备成粒状物;
3)、将步骤2)所得的粒状物于55~60℃干燥40~50min,冷却至室温后,得可调节便秘的营养大米。
在本发明中,魔芋葡甘聚糖、大豆膳食纤维、低聚果糖、玉米淀粉、大米粉均能通过常规市购的形式获得;例如:
魔芋葡甘聚糖可选用湖北一致魔芋生物科技有限公司生产的魔芋葡甘聚糖;
大豆膳食纤维可选用德州瑞康食品有限公司生产的大豆膳食纤维;
低聚果糖可选用深圳安泰生物科技有限公司生产的低聚果糖。
在本发明中,实现了变废为宝;采用苹果榨汁过程中产生的果渣,以及采用菠萝榨汁过程中产生的果渣;苹果汁、菠萝汁能另作他用。
本发明以火龙果寡糖、魔芋葡甘聚糖、佛手多糖、山药纤维素粉、苹果果胶粉、卷心菜纤维素粉、菠萝半纤维素粉、大豆膳食纤维、低聚果糖等为主要功能性调理成分,配以大米粉、玉米淀粉,经压制,成为米粒状,即为可调节便秘的营养大米(简称“大米”)。
本发明的可调节便秘的营养大米,结合火龙果寡糖,魔芋葡甘聚糖和大豆膳食纤维,佛手多糖粉,苹果果胶粉,山药纤维素粉,卷心菜纤维素粉,菠萝半纤维素粉,低聚果糖等的协同作用,达到调节便秘的目的。
采用上述配方所制得的营养大米,颜色成白色,有光泽,可单独食用,也可与普通大米按照任意比例混合一起蒸煮,熬粥。做成的米饭颗粒饱满完整,口感有韧劲。该大米可代替传统的大米,可促进肠道蠕动,具有调节便秘的作用。
本发明将大米粉与玉米淀粉混合,并加入火龙果寡糖,魔芋葡甘聚糖,大豆膳食纤维,佛手多糖粉,苹果果胶粉,卷心菜纤维素粉,山药纤维素粉,菠萝半纤维素粉等,促进小肠推进运动,及时排出体内代谢废物,缓解便秘,同时均衡各营养素,可代替传统大米,在进食日常所需能量的同时改善营养。
火龙果含丰富的蛋白质、氨基酸、矿物元素、维生素和脂肪酸等营养成分,同时还含有膳食纤维、类黄酮、植物多糖和苷类化合物等多种功能性物质,在排毒解毒、预防便秘等方面具有良好的作用。寡糖是由2-10个单糖通过糖苷键连接形成直链或者支链的低分子聚合物。目前已知的功能性寡糖有大豆低聚糖,低聚半乳糖,低聚龙胆糖等。寡糖不能被胃酸和机体分泌的酶水解,因而小肠不能消化利用,但寡糖进入大肠后可成为有益菌食物,促进有益菌繁殖。从火龙果中提取的火龙果寡糖一方面可为肠道内有益菌提供食物,促进预防和缓解便秘的双歧杆菌,乳酸乳球菌等有益菌繁殖,另外经有益菌发酵后产生的短链脂肪酸,又可被人体吸收合成各类氨基酸,蛋白质,供人体新城代谢。另一方面,火龙果寡糖可携带水分,使体内大肠废物保持湿润,从而调节便秘。
膳食纤维是一种非淀粉多糖,不能被人体消化酶分解,也是维持人体健康不可缺少的碳水化合物。魔芋葡甘聚糖是一种天然的水溶性植物膳食纤维,不被消化吸收,热量低,具有降低血糖,排毒通便的作用。魔芋膳食纤维通过影响肠道功能来改善便秘,包括增加粪便量及排便次数,稀释大肠内容物,改善肠道菌群。魔芋葡甘聚糖在肠中酵解生成低级脂肪酸,刺激肠蠕动,起到软化大便,增加粪便体积,起到通便的作用。
大豆膳食纤维的原料是豆制品加工厂的副产物豆渣,这是一种很好的食用纤维。经脱腥处理后制得大豆食用纤维粉,含纤维、蛋白质。因化学结构含有很多亲水基团而具有很强的持水性,而持水性可以增加人体排便的体积和速度。
佛手含有多种多样的生物化学性物质,主要化学成分有挥发油类,黄酮类,香豆类,多糖,氨基酸和无机盐等多种成分,具有免疫调节性,抗氧化,改善肠道的功效。佛手多糖粉主要以D-木糖,D-甘露糖,D-半乳糖,L-鼠李糖组成,具有抗感染等作用,同时可促进肠道内双歧杆菌和乳酸菌的繁殖,加快肠道蠕动性,改善便秘。
苹果果胶粉可以起到调节肠道功能,增加排便量以及大便次数的作用。苹果果胶不仅能通过吸收水分,增加粪便含水量来治疗便秘,更能通过降低小肠的吸收功能,被益生菌选择性完全发酵产生短链脂肪酸,如乙酸,丁酸等,通过酸性物质改变肠道pH值,改善有益菌群的繁殖,从而加快肠道蠕动,使粪便排出。
菠萝半纤维粉是一种重要的壁多糖,与纤维素不同,其主要结构单元包括D-木糖,L-阿拉伯糖,D-半乳糖等中性糖和少量糖醛酸。半纤维素因其由不同类型构成的异质多聚体,因而具有亲水性能。在大肠内可以使排泄物保持一定的湿度,从而增加粪便体积,有利于排便。
卷心菜纤维素粉中含大量半纤维素,有利于增加肠道内纤维素含量,起到清肠毒通宿便,具有清肠,解决便秘的效果。另外卷心菜纤维素粉中保留大量维生素C,维生素C可以提高人体免疫能力,同时参与胶原蛋白的合成,并利用本身的抗氧化性保护机体氧化。
山药中含有多种营养物质,例如蛋白质,多糖,氨基酸,薯蓣皂苷等。这些营养物质使得山药具有一定的生物活性,能够增强人体的免疫力,抗氧化性等。而山药纤维素粉保留的蛋白质可以为机体提供能量,保留的多糖以葡萄糖,果糖,甘露糖,阿拉伯糖等为主,可以被肠道中的益生菌所利用,为有益菌繁衍提供食物,进而加快肠道蠕动,改善便秘。
低聚果糖又称寡果糖,是一种存在水果,蔬菜等物质中的天然活性成分。低聚果糖不被小肠消化吸收而直接进入肠道被双歧杆菌所利用,从而改善肠道微生物区系,增加肠道蠕动,改善便秘症状。
本发明利用火龙果寡糖,魔芋葡甘聚糖和大豆膳食纤维,佛手多糖,山药纤维素粉,菠萝半纤维素粉和卷心菜纤维素粉和低聚果糖以及大米粉和玉米淀粉粘黏在一起,通过火龙果寡糖的润肠通便作用,结合魔芋糖苷聚糖和大豆膳食纤维等纤维素粉调节肠道的功能,低聚果糖改善肠道菌群加以辅助,达到调节便秘的作用。本发明混合大米粉和玉米淀粉意在提高便秘者肠道的蠕动性,调理身体积便。
具体实施方式
下面结合具体实施例对本发明进行进一步描述,但本发明的保护范围并不仅限于此。
实例一、火龙果寡糖的制备法,依次进行以下步骤:
步骤1:选取火龙果作为原料,洗净,去除果皮,取果肉,切成3~5mm的果片,在80℃烘箱中烘干150分钟。将烘干获得的果片用粉碎机粉碎至200~300目过筛,得果粉,备用。
步骤2:在100g果粉中加入去离子水450mL进行混匀;用0.04mol/L的过氧化氢水溶液清洗3次,每次清洗时氧化氢水溶液的用量为50ml,每次清洗后进行离心处理(于3000r/min转速下离心4min);得到沉淀I。
在沉淀I加入250ml水然后调节pH至6.2~6.3(可用pH=5.7的磷酸缓冲液进行调节),然后加入酶活力分别为2000IU、3000IU的α-1,4葡萄糖苷酶和α-1,6葡萄糖苷酶在37℃下水解40min,取出后在转速3000r/min下离心8min,得到沉淀II。
将所得沉淀II与200mL蒸馏水混合后,用0.05M的碳酸氢钠缓冲液调节pH至7.5,加入酶活力分别为4000IU、2000IU、3500IU的α-半乳糖苷酶、α-阿拉伯糖苷酶、α-甘露糖苷酶于42℃水解35min。所得溶液(水解液)3000~4000r/min的转速下离心5min后弃去沉淀,上清液在旋转蒸发仪上(60℃的蒸发温度)浓缩至原体积的10%,得浓缩液,备用。
步骤3:将上述浓缩液于-50~-59℃干燥冷冻8小时,取400~600mg溶于1~2ml蒸馏水,进行上样,使用200目硅胶装填的层析柱以正丁醇-乙酸-水(1﹕1.25﹕2.75,v/v/v)作为流动相进行洗脱,流速为1.5mL/min,直至洗脱液中无糖检出停止洗脱;将收集液(收集的洗脱液)在旋转蒸发仪上(60℃的蒸发温度)浓缩至原体积的10%,冷冻干燥(-50~-59℃干燥8小时)后,得到火龙果寡糖。
实例二、苹果果胶粉的制备方法:
将新鲜苹果用清水冲洗干净、晾干(表面不再滴水为止)后去核切块;然后置于榨汁机中压榨(置于常规榨汁机中压榨至不再出汁为止),将所得的果渣于80~90℃干燥70分钟,粉碎至能过80~100目的筛,得苹果粉;
将苹果粉与柠檬酸提取液按料液比1g/7ml混合后浸于65±5℃的水浴中浸提,浸提时间为70min;柠檬酸提取液为质量浓度为0.8%的柠檬酸水溶液;
浸提后立即对其抽滤处理,在滤液中加入等体积量的95%(体积%)乙醇溶液,静置90min后在4000±500r/min转速下离心6min。将离心得到的沉淀物置于65±5℃鼓风干燥箱中干燥至恒重(干燥时间约为60~90min),以此得到苹果果胶粉。
实例三、菠萝半纤维素粉的制备方法:
将新鲜菠萝清水洗净去皮切块后用压榨机压榨(置于常规榨汁机中压榨至不再出汁为止),所得的果渣80~90℃干燥80分钟,粉碎至过80-100目的筛,得菠萝粉;
按照1g/10ml的料液比,在菠萝粉中加入质量浓度为5%的NaOH水溶液于70±5℃浸提3h,然后过滤;
将所得的滤液调节pH为4.0±0.2(用1mol/L盐酸溶液进行调节),缓慢倒入(在1~2分钟内完成倒入)至95%(体积%)乙醇溶液中,滤液与95%乙醇溶液的体积比为1﹕3;然后静置90分钟从而产生絮状沉淀,再离心(于4000±500r/min离心5min);将离心得到的沉淀物置于65±5℃鼓风干燥箱中干燥至恒重(干燥时间约为60~90min),得到菠萝半纤维素粉。
实例四、佛手多糖的制备方法:
将佛手洗净切成2~3毫米的薄片,然后于80~90℃干燥80分钟,粉碎至过80~100目的筛,得佛手粉;
按照1g/2ml的料液比,将佛手粉加入至水中,于40±5℃下浸提60min,过滤得到滤液,将滤液浓缩至原体积的50%,再按体积比1﹕1缓慢加入(在1~2分钟内完成加入)至95%(体积%)乙醇溶液中,静置50min从而产生絮状沉淀,4000r/min条件下离心5min,所得沉淀物置于55℃鼓风干燥箱中干燥至恒重(干燥时间约为60~90min),得到佛手多糖。
实例五、卷心菜纤维素粉的制备方法:
将新鲜卷心菜洗净后晾干(即,不再滴水为止),然后切成10±2mm宽的长条状,得条状卷心菜;先将条状卷心菜置于40~50℃的热风干燥直至含水量15~20%,然后转入真空冷冻干燥处理,于-45~-60℃、0.05kPa的真空度下干燥至水分含量≤5%,然后粉碎至粒径80~100目,得卷心菜纤维素粉。
实例六、山药纤维素粉的制备方法:
将新鲜山药洗净、去皮,然后切成5mm厚的山药片,先50~60℃的热风干燥直至含水量在10%~15%(质量%),然后转入真空冷冻干燥处理,于-45~-60℃、0.05kPa的真空度下干燥至水分含量≤2%(质量%),然后粉碎至粒径80~100目,得山药纤维素粉。
实施例1:一种可调节便秘的营养大米,采用的原料为大米粉,玉米淀粉,火龙果寡糖,大豆膳食纤维,魔芋葡甘聚糖,佛手多糖粉,苹果果胶粉,山药纤维素粉,卷心菜纤维素粉,菠萝半纤维素粉,低聚果糖,并通过以下步骤制成:
步骤1:原料由以下质量百分比的成分组成:75%的大米粉,12%玉米淀粉,1.5%的火龙果寡糖,1.5%的魔芋葡甘聚糖,1.0%佛手多糖粉,2.0%山药纤维素粉,0.5%苹果果胶粉,3.0%卷心菜纤维素粉,1.0%菠萝半纤维素粉,1.5%的大豆膳食纤维,1.0%的低聚果糖。
在100g原料中加入30~35ml水进行充分搅拌,混合均匀,得到混合物。
步骤2:将混合物加入到螺杆制粒机中,控制螺杆制粒机温度约为25℃,压力15MPa、速度约为50r/min,制成粒径约为3~4mm的粒状物。
步骤3:将粒状物放到干燥箱中干燥处理,控制干燥时间为40~50min,干燥温度为55~60℃。
步骤4:将干燥好的大米自然冷却至室温后包装;得可调节便秘的营养大米。
实验一、将上述实施例1制备所得的可调节便秘的营养大米进行如下的实验:
设置雄性便秘大鼠模型组,具体为将24只雄性Wistar大鼠称体质量,随机将其中4只作为正常对照组给予生理盐水,其余20只每天灌胃1mL盐酸洛哌丁胺生理盐水溶液(按3.0mg/kg体质量将盐酸洛哌丁胺溶于1ml 0.9%生理盐水)5d制造便秘大鼠模型。
将20只Wistar雄性便秘大鼠模型组随机平均分为5组:模型对照组、阳性对照组(番泻叶组)、调节便秘的营养大米低剂量组、中剂量组、高剂量组;还设置了正常对照组,总共6组。
正常对照组和模型对照组按2.0mL/(kg·d)的剂量持续灌胃0.9%生理盐水9d,摄食为自由摄取大鼠专用饲料。
阳性对照组(番泻叶组):称取番泻叶5.0g,加入100mL沸水中浸泡25min,冷却后以纱布过滤药液,弃药渣不用,将滤液115℃、15min灭菌,冷却至室温后,按照每天2ml剂量进行持续灌胃。摄食为自由摄取大鼠专用饲料。
低剂量组为由40%大鼠饲料中混合20%的本大米(实施例1制备而得)、40%的普通大米组成的混合料;摄食为自由摄取该混合料。
中剂量组为由40%大鼠饲料中混合40%的本大米,20%的普通大米组成的混合料;摄食为自由摄取该混合料。
高剂量组为由40%大鼠饲料中混合60%的本大米组成的混合料;摄食为自由摄取该混合料。
以上各组均自由饮水。
粪便含水量测定:记录大鼠各实验阶段的每日粪便粒数、粪便鲜质量与干质量,按下式计算粪便含水量。
粪便含水量(%)=(mf-md)/mf×100
式中:mf为粪便鲜质量/g;md为粪便干质量/g。
小肠推进实验:第9次给予受试样品后,所有大鼠禁食不禁水24h后,每只大鼠灌胃1.0mL炭末液(3.0g炭末溶于50.0mL 0.5%的羧甲基纤维素钠溶液),10min后心脏取血处死,剖腹,将消化道幽门至回盲瓣部分完全取出,测量小肠全长及从幽门到炭末前沿的“炭末推进长度”,按下式计算小肠炭末推进率。
小肠炭末推进率(%)=炭末推进长度(cm)/小肠全长(cm)×100
实验结果见表1。
表1、营养大米对大鼠排便的影响
实施例2:
原料由以下质量百分比的成分组成:72.5%的大米粉,15%玉米淀粉,2.0%火龙果寡糖,1.5%魔芋葡甘聚糖,1.5%佛手多糖粉,1.0%山药纤维素粉,1.5%苹果果胶粉,0.5%卷心菜纤维素粉,0.5%菠萝半纤维素粉,2.5%大豆膳食纤维,1.5%的低聚果糖。其余同实施例1。
对比例1-1、将实例一步骤2所得的沉淀I替代火龙果寡糖,用量不变,其余等同于实施例1。
对比例1-2、将实例一步骤2中“酶活力分别为2000IU、3000IU的α-1,4和α-1,6糖苷酶”改成“酶活力为5000IU的α-1,4糖苷酶”,其余同实例一。以此方法制备而得的火龙果寡糖替代实施例1中的火龙果寡糖,其余等同于实施例1。
对比例1-3、将实例一步骤2中“酶活力分别为2000IU、3000IU的α-1,4和α-1,6糖苷酶”改成“酶活力为5000IU的α-1,6糖苷酶”,其余同实例一。以此方法制备而得的火龙果寡糖替代实施例1中的火龙果寡糖,其余等同于实施例1。
对比例1-4、将实例一中“酶活力分别为4000IU、2000IU、3500IU的α-半乳糖苷酶、α-阿拉伯糖苷酶、α-甘露糖苷酶”改成“酶活力分别为6000IU、3500IU的α-半乳糖苷酶、α-阿拉伯糖苷酶”,其余同实例一。以此方法制备而得的火龙果寡糖替代实施例1中的火龙果寡糖,其余等同于实施例1。
对比例1-5、将实例一中“酶活力分别为4000IU、2000IU、3500IU的α-半乳糖苷酶、α-阿拉伯糖苷酶、α-甘露糖苷酶”改成“酶活力分别为5000IU、4500IU的α-半乳糖苷酶、α-甘露糖苷酶”,其余同实例一。以此方法制备而得的火龙果寡糖替代实施例1中的火龙果寡糖,其余等同于实施例1。
对比例1-6、将实例一中“酶活力分别为4000IU、2000IU、3500IU的α-半乳糖苷酶、α-阿拉伯糖苷酶、α-甘露糖苷酶”改成“酶活力分别为3500IU、6000IU的α-阿拉伯糖苷酶、α-甘露糖苷酶”,其余同实例一。以此方法制备而得的火龙果寡糖替代实施例1中的火龙果寡糖,其余等同于实施例1。
对比例2-1、将原料的配方作如下更改:取消1.5%火龙果寡糖的使用,将佛手多糖粉的含量改成2.5%;其余等同于实施例1。
对比例2-2、将原料的配方作如下更改:火龙果寡糖含量为0.2%,低聚果糖含量为0.5%;,魔芋葡甘聚糖含量为2%,佛手多糖粉含量为2.3%;其余等同于实施例1。
对比例2-3、将原料的配方作如下更改:取消1.0%佛手多糖的使用;将火龙果寡糖含量改成2.5%;其余等同于实施例1。
对比实验、将实施例2和上述所有的对比例按照实验一所述方式进行实验(仅仅设置高剂量组),炭末推进率的结果见表2。
表2、营养大米对大鼠排便的影响
最后,还需要注意的是,以上列举的仅是本发明的若干个具体实施例。显然,本发明不限于以上实施例,还可以有许多变形。本领域的普通技术人员能从本发明公开的内容直接导出或联想到的所有变形,均应认为是本发明的保护范围。
Claims (7)
1.可调节便秘的营养大米,其特征是:其原料由以下重量含量的成分组成:75%的大米粉,12%玉米淀粉,1.5%的火龙果寡糖,1.5%的魔芋葡甘聚糖,1.0%佛手多糖粉,2.0%山药纤维素粉,0.5%苹果果胶粉,3.0%卷心菜纤维素粉,1.0%菠萝半纤维素粉,1.5%的大豆膳食纤维,1.0%的低聚果糖;
或者,其原料由以下质量百分比的成分组成:72.5%的大米粉,15%玉米淀粉,2.0%火龙果寡糖,1.5%魔芋葡甘聚糖,1.5%佛手多糖粉,1.0%山药纤维素粉,1.5%苹果果胶粉,0.5%卷心菜纤维素粉,0.5%菠萝半纤维素粉,2.5%大豆膳食纤维,1.5%的低聚果糖;
火龙果寡糖的提取方法为包括以下步骤:
1.1、将火龙果的果肉切成3~5mm厚的果片,先于80~90℃烘干120~150分钟,然后粉碎至过200~300目的筛,得果粉;
1.2、在100g果粉中加入300~500ml去离子水混匀,然后用0.03~0.05mol/L的过氧化氢水溶液进行清洗,再离心,得沉淀Ⅰ;采用过氧化氢水溶液进行清洗的次数为2~3次,每次清洗时,过氧化氢水溶液的用量为50±10ml,每次清洗后进行离心处理;
先在所得的沉淀Ⅰ中加入200~300ml水然后调节pH至6.2~6.3,再加入酶活力分别为2000±200IU、3000±300IU的α-1,4和α-1,6葡萄糖苷酶于37±0.5℃下水解40±2min,然后离心;得沉淀Ⅱ;
先将沉淀Ⅱ与200~300ml蒸馏水混合,然后调节pH至7.5~7.7,再加入酶活力分别为4000±400IU、2000±200IU、3500±350IU的α-半乳糖苷酶、α-阿拉伯糖苷酶、α-甘露糖苷酶于42±0.5℃条件下水解35±3min;所得水解液离心后弃去沉淀,上清液在旋转蒸发仪上浓缩至原体积的9~11%,得浓缩液;
1.3、将上述浓缩液冷冻干燥,取400~600mg溶于1~2ml蒸馏水中进行上样,使用200目硅胶装填的层析柱,以正丁醇-乙酸-水=1﹕1.25﹕2.75(v/v/v)作为流动相进行洗脱,流速为1.5±0.2ml/min,直至洗脱液中无糖检出停止洗脱;将收集液浓缩至原体积的9~11%,冷冻干燥后,得到火龙果寡糖。
2.根据权利要求1所述的可调节便秘的营养大米,其特征是苹果果胶粉的制备方法为包括以下步骤:
将苹果用清水冲洗干净、晾干后去核切块;然后置于榨汁机中压榨,将所得的果渣干燥,粉碎,得苹果粉;
将所得的苹果粉与柠檬酸提取液按料液比1g/6~8ml混合后于65±5℃浸提,浸提时间为70±10min;所述柠檬酸提取液是质量浓度为0.5%~0.8%的柠檬酸水溶液;
浸提结束后抽滤,在滤液中加入等体积量的95%乙醇溶液,静置90±10min后离心;将离心得到的沉淀物干燥,得到苹果果胶粉。
3.根据权利要求1所述的可调节便秘的营养大米,其特征是菠萝半纤维素粉的制备方法为包括以下步骤:
将菠萝洗净去皮切块后进行压榨,所得的果渣干燥,粉碎,得菠萝粉;
按照1g/9~11ml的料液比,在菠萝粉中加入质量浓度为4~6%的NaOH水溶液于70±5℃浸提3±0.5h,然后过滤;
将所得的滤液调节pH为4.0±0.2,倒入至95%乙醇溶液中,所述滤液与95%乙醇溶液的体积比为1﹕2~4;然后静置60~90分钟从而产生絮状沉淀,再离心;将离心得到的沉淀物干燥,得到菠萝半纤维素粉。
4.根据权利要求1所述的可调节便秘的营养大米,其特征是佛手多糖的制备方法为包括以下步骤:
将佛手洗净切成2~3毫米的薄片,然后干燥,粉碎,得佛手粉;
按照1g/1.5~2.5ml的料液比,将佛手粉加入至水中,于40±5℃浸提60±5min,过滤得到滤液,将滤液浓缩至原体积的45~55%,按体积比1:0.8~1.2加入至95%乙醇溶液中,静置50±5min从而产生絮状沉淀,离心,所得沉淀物干燥,得到佛手多糖粉。
5.根据权利要求1所述的可调节便秘的营养大米,其特征是卷心菜纤维素粉的制备方法为包括以下步骤:
将卷心菜洗净后晾干,然后切成10±2mm宽的长条状,得条状卷心菜;将条状卷心菜先干燥至含水率15~20%,然后真空冷冻干燥至水分含量≤5%,粉碎,得卷心菜纤维素粉。
6.根据权利要求1所述的可调节便秘的营养大米,其特征是山药纤维素粉的制备方法为包括以下步骤:
将新鲜山药洗净、去皮,然后切成5±1mm厚的山药片,先干燥直至含水率10%~15%,然后真空冷冻干燥至水分含量≤2%,再粉碎,得山药纤维素粉。
7.如权利要求1~6任一所述的可调节便秘的营养大米的制备方法,其特征在于包括以下步骤:
1)、将原料与水按照100g/30~35ml的料液比均匀搅拌混合,得到混合物;
2)、将混合物利用螺杆制粒机制备成粒状物;
3)、将步骤2)所得的粒状物于55~60℃干燥40~50min,冷却至室温后,得可调节便秘的营养大米。
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