CN106729934A - 一种番茄皮可溶性膳食纤维的互穿胶体及其制备方法 - Google Patents

一种番茄皮可溶性膳食纤维的互穿胶体及其制备方法 Download PDF

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CN106729934A
CN106729934A CN201710044490.9A CN201710044490A CN106729934A CN 106729934 A CN106729934 A CN 106729934A CN 201710044490 A CN201710044490 A CN 201710044490A CN 106729934 A CN106729934 A CN 106729934A
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colloid
ipn
dietary fiber
soluble dietary
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牛宇戈
李娜
冯子倩
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Shanghai Jiaotong University
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Abstract

本发明提供了一种番茄皮可溶性膳食纤维的互穿胶体及其制备方法,具体地,本发明提供的互穿胶体不仅具有优异的弹性模量、粘性模量和硬度,还具有价格低廉、环保、安全系数高、成分天然的特点。

Description

一种番茄皮可溶性膳食纤维的互穿胶体及其制备方法
技术领域
本发明涉及包含互穿胶体的医疗材料,具体地,涉及一种番茄皮可溶性膳食纤维的互穿胶体及其制备方法。
背景技术
番茄是消费量仅次于土豆的蔬菜品种,在番茄酱、番茄汁等加工过程中,会产生4-5%的番茄皮渣,番茄皮渣中含有利用价值高的可溶性膳食纤维,但未被有效地开发和综合利用,既造成了经济上的浪费,又由于堆弃造成环境污染。
目前,天然的互穿胶体(互穿水凝胶)因为来源不同,结构与性质存在批次间的差异,有一定的局限性。合成的互穿胶体(互穿水凝胶)的结构与性能可控,重复性好,但生物相容性差。传统结构水凝胶的缺点还包括相应速率慢、力学力度低等。互穿水凝胶被广泛应用于生物医用材料、石油化工、农业、日用化妆品方面,但可口服或食用的互穿水凝胶研究和应用很少。
因此,本领域迫切需要开发一种价格低廉、环保、安全系数高、利用天然食品提取物加工而成的互穿胶体。
发明内容
本发明的目的在于提供一种价格低廉、环保、安全系数高、利用天然食品提取物加工而成的互穿胶体。
本发明第一方面提供了一种互穿胶体,包括:
可溶性膳食纤维,所述可溶性膳食纤维来源茄科植物;
生物聚合物,所述生物聚合物选自下组:明胶、鱼胶、或其组合;
生物联结剂,所述生物联结剂选自下组:谷氨酰胺转氨酶(mTG)、多酚氧化酶、或其组合;
金属阳离子,所述金属阳离子选自下组:Ca2+、Fe2+、Mg2+、或其组合;
其中,以所述互穿胶体的总重计,所述可溶性膳食纤维与所述生物聚合物的重量比为1:1-100,较佳地,1:3-80,更佳地,1:4-50;所述生物联结剂、所述金属阳离子的重量比为1000:0.1-50,较佳地,1000:0.5-30,更佳地,1000:0.8-10。
在另一优选例中,所述可溶性膳食纤维与所述生物聚合物、所述生物联结剂、所述金属阳离子的重量比为5-80:15-500:10-500:0.02-5,较佳地,8-50:50-300:30-300:0.08-3,更佳地,10-30:100-200:50-200:0.1-1,以互穿胶体的总重计。
在另一优选例中,所述可溶性膳食纤维来源茄科番茄属植物。
在另一优选例中,所述可溶性膳食纤维的来源选自下组:番茄皮、樱桃番茄皮、或其组合。
在另一优选例中,以所述互穿胶体的总重计,所述可溶性膳食纤维的含量(wt%)为0.05-40,较佳地,0.08-20,更佳地,0.1-10。
在另一优选例中,以所述互穿胶体的总重计,所述生物聚合物的含量(wt%)为1-50,较佳地,3-30,更佳地,5-20。
在另一优选例中,以所述互穿胶体的总重计,所述生物联结剂的含量(wt%)为0.5-50,较佳地,1-30,更佳地,3-10。
在另一优选例中,以所述互穿胶体的总重计,所述金属阳离子的含量(wt%)为0.005-0.8,较佳地,0.008-0.3,更佳地,0.01-0.2。
在另一优选例中,以所述互穿胶体的总重计,所述可溶性膳食纤维与所述生物聚合物、所述联结剂、所述金属阳离子的总含量(wt%)为10-50,较佳地,15-40,更佳地,20-30。
在另一优选例中,所述互穿胶体还含有水(较佳地,去离子水)。
在另一优选例中,以所述互穿胶体的总重计,所述水的含量(wt%)为50-90,较佳地,60-85,更佳地,70-80。
在另一优选例中,所述互穿胶体具有选自下组的一个或多个特点:
(i)弹性模量(G’)≥80Pa,较佳地,≥100Pa,更佳地,≥1000Pa,更佳地,2000-8000Pa,更佳地,3000-8000Pa;更佳地,5000-8000Pa;
(ii)粘性模量(G”)≥8Pa,较佳地,≥10Pa,更佳地,50-800Pa,更佳地,180-800Pa;更佳地,200-500Pa;
(iii)硬度为400-800g,较佳地,550-800g,更佳地,580-750g,更佳地,600-700g。
本发明第二方面提供了一种互穿胶体医疗器材,所述医疗器材包含本发明第一方面所述的互穿胶体。
在另一优选例中,所述互穿胶体医疗器材选自下组:活性物质的控制释放基材、活性物质的包裹基材、止血材、创伤敷材、引导组织再生基材、组织抗沾粘基材、组织工程基材、或其组合。
本发明第三方面提供了一种本发明第一方面所述互穿胶体的制备方法,包括:
将可溶性膳食纤维、生物聚合物、生物联结剂、金属阳离子混合,从而得到本发明第一方面所述的互穿胶体,其中,所述可溶性膳食纤维来源茄科植物;所述生物聚合物选自下组:明胶、鱼胶、或其组合;所述生物联结剂选自下组:谷氨酰胺转氨酶(mTG)、多酚氧化酶、或其组合;所述金属离子选自下组:Ca2+、Fe2+、Mg2+、或其组合。
本发明第四方面提供了一种本发明第一方面所述互穿胶体的用途,用于制备互穿胶体医疗器材。
在另一优选例中,所述互穿胶体医疗器材选自下组:活性物质的控制释放基材、活性物质的包裹基材、止血材、创伤敷材、引导组织再生基材、组织抗沾粘基材、组织工程基材、或其组合。
应理解,在本发明范围内中,本发明的上述各技术特征和在下文(如实施例)中具体描述的各技术特征之间都可以互相组合,从而构成新的或优选的技术方案。限于篇幅,在此不再一一累述。
附图说明
图1显示了半互穿胶体成胶过程中流变性质的结果图。
图2显示了互穿胶体成胶过程中流变性质的结果图。
图3显示了半互穿胶体和互穿胶体的硬度比较结果图。
图4显示了SDF与对照品所制复合胶的流变性质比较结果图。
图5显示了SDF与对照品所制复合胶的硬度比较结果图。
具体实施方式
本发明人经过长期而深入的研究,通过大量筛选,意外地发现,将可溶性膳食纤维(如番茄皮可溶性膳食纤维)、生物聚合物(如明胶)、生物联结剂(如mTG)、金属阳离子(如Ca2+)以一定比例混合,可获得互穿胶体,其具有优异的弹性模量、粘性模量和硬度,并且本发明的互穿胶体还具有价格低廉、环保、安全系数高、成分天然的特点。在此基础上,本发明人完成了本发明。
可溶性膳食纤维
如本文所用,所述“可溶性膳食纤维”指不能被人体消化道分泌的消化酶所消化,但可溶于温水或热水,且其水溶液又能被相当于四倍乙醇再沉淀的那部分膳食纤维。可溶性膳食纤维较不溶性膳食纤维在生理功能方面更能发挥其代谢作用,它在促进肠道内益生菌的生长、预防冠心病、动脉硬化、高血脂、糖尿病、肥胖病等相关疾病方面具有显著功效,可溶性膳食纤维还可有效控制血糖和胆固醇的上升。
可溶性膳食纤维的组成成分复杂,主要有果胶、瓜尔胶、葡聚糖和真菌多糖等。在一优选实施方式中,在本发明中,所述可溶性膳食纤维来自于茄科植物(较佳地,茄科番茄属),优选番茄(较佳地,番茄皮)。
在本发明中,以所述互穿胶体的总重计,所述可溶性膳食纤维的含量(wt%)为0.05-40,较佳地,0.08-20,更佳地,0.1-10,更佳地,0.4-7,更佳地,0.4-5,更佳地,0.4-3。
生物聚合物
如本文所用,术语“生物聚合物”指活生物体产生的聚合生物分子在一优选实施方式中,在本发明中,所述生物聚合物选自下组:明胶、鱼胶、或其组合。
在本发明中,以所述互穿胶体的总重计,所述生物聚合物的含量(wt%)为1-50,较佳地,3-30,更佳地,5-20,更佳地,9-15,更佳地,10-14,更佳地,11-13。
生物联结剂
如本文所用,术语“生物联结剂”指可催化生物大分子内和分子间发生共价交联,从而改善其结构和功能。在一优选实施方式中,在本发明中,所述生物联结剂选自下组:谷氨酰胺转氨酶(mTG)、多酚氧化酶、或其组合。在本发明中,以所述互穿胶体的总重计,所述生物联结剂的含量(wt%)为0.5-50,较佳地,1-30,更佳地,3-10,更佳地,5-10,更佳地,7-10,更佳地,7-9。
金属阳离子
如本文所用,术语“金属阳离子”指二价或三价金属阳离子,例如,钙(Ca2+),钡(Ba2 +),Mg2+,铁(Fe2+),锌(Zn2+),和铝(Al3+)阳离子或其任意组合的材料,例如为氯化钙、碳酸钙、、磷酸氢钙、磷酸三钙、、氯化镁,氯化钡、、氯化锌或其任意组合。在本发明中,以所述互穿胶体的总重计,所述金属阳离子的含量(wt%)为0.005-0.8,较佳地,0.008-0.3,更佳地,0.01-0.2,更佳地,0.013-0.019,更佳地,0.014-0.019,更佳地,0.015-0.018。
互穿胶体
如本文所用,术语“互穿胶体”、“互穿水凝胶”可互换使用,均指两种或两种以上的水溶性或亲水性的高分子,以水为分散介质,通过一定的化学交联或物理交联使分子链相互贯穿而形成的网络结构。
在本发明中,所述互穿胶体主要含有以下组分:可溶性膳食纤维、生物聚合物、生物联结剂、金属阳离子。
其中,所述可溶性膳食纤维的选择没有特别限制,在一优选实施方式中,所述可溶性膳食纤维来源于茄科植物,优选番茄,较佳地,番茄皮。
所述生物聚合物的选择没有特别限制,在一优选实施方式中,所述生物聚合物包括(但并不限于):明胶、鱼胶。
所述生物联结剂的选择没有特别限制,在一优选实施方式中,所述生物联结剂包括(但并不限于):mTG、多酚氧化酶。
所述金属阳离子的选择没有特别限制,在一优选实施方式中,所述金属阳离子包括(但并不限于):Ca2+、Fe2+、Mg2+
在一优选实施方式中,以所述互穿胶体的总重计,所述可溶性膳食纤维与所述生物聚合物的重量比为1:1-100,较佳地,1:3-80,更佳地,1:4-50,更佳地,1:5-30,较佳地,1:5-15,更佳地,1:7.5-15;所述生物联结剂、所述金属阳离子的重量比为1000:0.1-50,较佳地,1000:0.5-30,更佳地,1000:0.8-10,更佳地,1000:1-4,更佳地,1000:2-4,更佳地,1000:2-3。
在一优选实施方式中,所述可溶性膳食纤维与所述生物聚合物、所述生物联结剂、所述金属阳离子的重量比为5-80:15-500:10-500:0.02-5,较佳地,8-50:50-300:30-300:0.08-3,更佳地,10-30:100-200:50-200:0.1-1,更佳地,20:150:100:0.2,以互穿胶体的总重计。
在一优选实施方式中,以所述互穿胶体的总重计,所述可溶性膳食纤维与所述生物聚合物、所述联结剂、所述金属阳离子的总含量(wt%)为10-50,较佳地,15-40,更佳地,20-30,更佳地,20-26,更佳地,20-25,更佳地,20-24。
在本发明中,所述互穿胶体还含有水。其中,在互穿胶体中,所述水的含量(wt%)为50-90,较佳地,60-85,更佳地,70-80,更佳地,74-80,较佳地,75-80,更佳地,76-80。
在本发明中,将可溶性膳食纤维(如番茄皮可溶性膳食纤维)、生物聚合物(如明胶)、生物联结剂(如mTG)、金属阳离子(如Ca2+)以一定比例混合,可显著改善可溶性膳食纤维与金属阳离子(如Ca2+)的成胶性质,并可得到具有优异的弹性模量、粘性模量和硬度的互穿胶体,并且本发明的互穿胶体还具有价格低廉、环保、安全系数高、成分天然的特点。
本发明的主要优点包括:
(1)本方法首次以可溶性膳食纤维(优选番茄皮可溶性膳食纤维)作为原料与明胶、谷氨酰胺转氨酶和氯化钙溶液作用形成具有优异的弹性模量、粘性模量和硬度的互穿胶体。
(2)本方法对番茄食品加工废弃物番茄皮进行有效的利用,提高了番茄皮的利用价值,且水凝胶具有生物降解性,减轻了番茄加工废弃物对环境造成的压力。
(3)本方法中番茄皮可溶性膳食纤维作为天然食品的提取物,安全系数高,形成的互穿胶体可用于食品营养物质、生物医学物质的包裹保护。
(4)本发明获得的互穿胶体具有价格低廉、环保、安全系数高、成分天然、生物相容性好的特点。
(5)本方法中将酶法和物理交联法联合使用,这是未来的一个发展方向,催化反应具有专一性、高效性、高选择性及反应条件的相对温和性等优点。
下面结合具体实施例,进一步详陈本发明。应理解,这些实施例仅用于说明本发明而不用于限制本发明的范围。下列实施例中未注明详细条件的实验方法,通常按照常规条件如Sambrook等人,分子克隆:实验室手册(New York:Cold Spring Harbor LaboratoryPress,1989)中所述的条件,或按照制造厂商所建议的条件。除非另外说明,否则百分比和份数按重量计算。
以下实施例中所用的实验材料和试剂如无特别说明均可从市售渠道获得。
实验方法
1)清洗番茄,获取番茄皮;
2)番茄皮置于55度烘箱烘干,备用;
3)研磨番茄皮,过60目筛;
4)参考国标GB/T 5009.88-2008方法,对番茄皮进行可溶性膳食纤维的提取;
5)番茄皮可溶性膳食纤维(T-SDF)的提取:
①称取6g番茄皮,置于高脚烧杯中
②在烧杯中加入240mL MES-TRIS缓冲液,在磁力搅拌器上进行搅拌至番茄皮粉末混散均匀
③用热稳定的淀粉酶进行酶解处理:加600μL热稳定的淀粉酶溶液,用铝箔片将烧杯盖住。在95~100℃水浴中反应30min(起始的水浴温度应达到95℃),并不断低速振荡。
④冷却:所有烧杯从水浴中移出,晾至60℃。打开铝箔盖,用刮勺将烧杯边缘以及烧杯底部的胶状物刮离。用60mL蒸馏水冲洗烧杯壁和刮勺。
⑤用蛋白酶进行酶解处理:在每个烧杯中各加入60μL蛋白酶溶液。用铝箔盖住,在60℃持续振荡反应30min(起始的水浴温度应达60℃),使之充分反应。
⑥pH测定:30min后,打开铝箔盖,搅拌中加入5mL 0.561mol/L HAC至烧杯中。60℃时用溶液或1mol/L HAC溶液调最终pH为4.5(当溶液为60℃时检测和调整pH,因为在较低温度时pH会偏高)。
⑦用淀粉葡糖苷酶溶液酶解处理:搅拌同时加600μL淀粉葡糖苷酶溶液。用铝箔盖住,在60℃持续振摇反应30min,温度应恒定在60℃。
⑧提取番茄皮可溶性膳食纤维:用布氏漏斗过滤,并用60mL70℃水洗残渣2次,将全部滤液转移到旋转蒸发瓶中进行旋转蒸发至100mL,加约滤出液4~5倍量已预热至60℃的95%乙醇。室温下沉淀1h。沉淀后离心,合并沉淀,冻干。冻干物即为番茄皮的可溶性膳食纤维。
6)番茄皮的可溶性膳食纤维(T-SDF)与明胶、谷氨酰胺转氨酶(mTG)、50mmol/L氯化钙溶液按照一定比例混合,利用流变仪测定胶体的成胶过程中弹性模量(G’)和粘性模量(G”)的变化,证明互穿胶体的形成;具体方法如下:
①称取七份150mg明胶于5mL离心管中,标记为Gel-1,Gel-2,Gel-3,Gel-4,Gel-5,Gel-6,Gel-7;
②Gel-1~Gel-4中分别加入0mg T-SDF,5mg T-SDF,10mg T-SDF,20mg T-SDF,加入1mL去离子水,并涡旋2-3min,加入转子放置于55℃水浴条件下加热溶解,并进行磁力搅拌,至明胶与T-SDF完全溶解;
③半互穿胶体的制备:待Gel-1~Gel-4中混合物完全溶解后,立即加入100mg mTG涡旋至mTG完全溶解;
④流变性质测定:将混合物立即移至预热至40℃的流变仪平板上,使用40mm平板测试头测定胶体的成胶过程中弹性模量(G’)和粘性模量(G”)的变化,流变仪参数设定:测定时间40min,测定频率1Hz,测定应变力1%;
⑤Gel-5~Gel-7中分别加入5mg T-SDF,10mg T-SDF,20mg T-SDF,加入900μL去离子水,并涡旋2-3min,加入转子放置于55℃水浴条件下加热溶解,并进行磁力搅拌,至明胶与T-SDF完全溶解;
⑥互穿胶体的制备:待Gel-5~Gel-7中混合物完全溶解后,立即依次加入100mgmTG与100μL 50mmol/L氯化钙溶液,涡旋5-10s;
⑦流变性质的测定:将混合物立即移至预热至40℃的流变仪平板上,使用40mm平板测试头测定胶体的成胶过程中弹性模量(G’)和粘性模量(G”)的变化,流变仪参数设定:测定时间40min,测定频率1Hz,测定应变力1%;
⑧根据弹性模量(G’)和粘性模量(G”)的规律,证明互穿胶体的形成,结果如表1所示,半互穿胶体成胶过程中的流变性质如图1所示,互穿胶体成胶过程中的流变性质如图2所示。
表1
7)番茄皮的可溶性膳食纤维(T-SDF)与明胶、谷氨酰胺转氨酶(mTG)、50mmol/L氯化钙溶液按照一定比例混合形成胶体,利用质构仪测定胶体的成胶后硬度的变化,证明互穿胶体的形成;具体方法如下:
①称取八份300mg明胶于小称量皿中,标记为G-S1,G-S2,G-S3,G-S4,G-S5,G-S6,G-S7,G-S8;
②G-S1~G-S4中分别加入0mg T-SDF,10mg T-SDF,20mg T-SDF,40mg T-SDF,加入2mL去离子水,并涡旋2-3min,放置55℃水浴条件下加热溶解,至明胶与T-SDF完全溶解;
③半互穿胶体的制备:
待G-S1~G-S4中混合物完全溶解后,立即加入200mg mTG涡旋至mTG完全溶解;
将G-S1~G-S4用锡箔纸包裹好放置于40℃烘箱中反应30min;
将G-S1~G-S4取出,用小刮刀轻轻铲动胶体四周与底部,与培养皿分离,用针管吸2mL去离子水于培养皿中,将胶体浸没;
将培养皿放置在振荡器上中速振荡60min;
用镊子取出semi-IPN,用吸水纸吸取胶体表面水层,进行硬度测定;
④硬度测定:将semi-IPN移至质构仪平板上,使用P-0.5探头测定胶体成胶后硬度的变化,质构仪参数设定:测前速度2mm/sec,测时速度0.5mm/sec,测后速度3mm/sec,每块胶体取三处不同位置测定,每处测两次;
⑤G-S5~G-S8中分别加入0mg T-SDF,10mg T-SDF,20mg T-SDF,40mg T-SDF,加入2mL去离子水,并涡旋2-3min,放置55℃水浴条件下加热溶解,至明胶与T-SDF完全溶解;
⑥互穿胶体的制备:
待G-S5~G-S8中混合物完全溶解后,立即加入200mg mTG涡旋至mTG完全溶解;
将G-S5~G-S8用锡箔纸包裹好放置于40℃烘箱中反应30min;
将G-S5~G-S8取出,用小刮刀轻轻铲动胶体四周与底部,与培养皿分离,用针管吸2mL 5mmol/L氯化钙溶液于培养皿中,将胶体浸没;
将培养皿放置在振荡器上中速振荡60min;
用镊子取出互穿胶体,用少量去离子水洗去胶体表面的氯化钙溶液,并用吸水纸吸取胶体表面水层,进行硬度测定;
⑦硬度测定:将互穿胶体移至质构仪平板上,使用P-0.5探头测定胶体成胶后硬度的变化,质构仪参数设定:测前速度2mm/sec,测时速度0.5mm/sec,测后速度3mm/sec,每块胶体取三处不同位置测定,每处测两次,结果如表2和图3所示。
表2
实验结果
结果表明,未加入氯化钙溶液时,明胶、SDF和mTG形成半互穿胶体,且随着SDF含量的增加(0~20mg),弹性模量(G’)和粘性模量(G”)在900s后与SDF含量是不相关的,并且G’只有1000Pa,G”只有30Pa,最高G’仅为5100Pa,G”仅为50Pa,这说明半互胶状态时,SDF含量的增加未使胶体的流变性质未得到明显的改善(图1);而加入氯化钙溶液后,明胶、SDF、mTG和氯化钙形互穿胶体,弹性模量(G’)和粘性模量(G”)与SDF含量呈明显的正相关性,G’和G”有明显的增加趋势(并且G’可从2910Pa增加到6936Pa,G”可从55Pa增加到399Pa,最高G’可达6936Pa,G”可达399Pa),这说明SDF-氯化钙溶液和明胶-mTG能够形成互穿胶体,显著改善胶体的性质(图2)。
此外,未加入氯化钙溶液时,明胶、SDF和mTG形成半互穿胶体,且随着SDF含量的增加(0~20mg),胶体硬度与SDF含量不相关,并且胶体硬度最优仅为542g,这说明胶体呈半互穿状态时,胶体的硬度性质未得到明显的改善;而加入氯化钙溶液时,SDF-氯化钙和明胶-mTG形成互穿结构的胶体,且随着SDF含量的增加(0~20mg),胶体硬度与SDF含量呈明显的正相关,并且胶体硬度可高达665g,这说明胶体呈互穿状态时,胶体的硬度性质得到明显的改善(图3)。
对比例1壳聚糖、海藻酸钠分别替换本发明的可溶性膳食纤维的弹性模量和粘性模量的结果比较
用本发明的实验方法,区别在于,分别用壳聚糖、海藻酸钠替换本发明的茄科(优选番茄皮)可溶性膳食纤维,其中,壳聚糖与本发明的生物聚合物(如明胶)、本发明的生物联结剂(如mTG)、本发明的金属阳离子(如Ca2+)的重量比为20:150:100:0.2;海藻酸钠与本发明的生物聚合物(如明胶)、本发明的生物联结剂(如mTG)、本发明的金属阳离子(如Ca2+)的重量比为20:150:100:0.2;本发明的茄科(优选番茄皮)可溶性膳食纤维与本发明的生物聚合物(如明胶)、本发明的生物联结剂(如mTG)、本发明的金属阳离子(如Ca2+)的重量比为20:150:100:0.2。
结果如图4和表3所示。结果显示,含有本发明的可溶性膳食纤维(SDF)的互穿胶体的G’最高为6936Pa,G”最高为399Pa。含壳聚糖的互穿胶体的G’最高仅为2587Pa,G”最高仅为69Pa;含海藻酸钠的互穿胶体的G’最高仅为5259Pa,G”最高仅为107Pa。
因此,结果表明,含有本发明的可溶性膳食纤维(SDF)的互穿胶体的弹性模量G’和粘性模量G”均显著高于含壳聚糖的互穿胶体、含海藻酸钠的互穿胶体。
对比例2壳聚糖、海藻酸钠分别替换本发明的可溶性膳食纤维的硬度的结果比较
用本发明的实验方法,区别在于,分别用壳聚糖、海藻酸钠替换本发明的茄科(优选番茄皮)可溶性膳食纤维,其中,壳聚糖与本发明的生物聚合物(如明胶)、本发明的生物联结剂(如mTG)、本发明的金属阳离子(如Ca2+)的重量比为20:150:100:0.2;海藻酸钠与本发明的生物聚合物(如明胶)、本发明的生物联结剂(如mTG)、本发明的金属阳离子(如Ca2+)的重量比为20:150:100:0.2;本发明的茄科(优选番茄皮)可溶性膳食纤维与本发明的生物聚合物(如明胶)、本发明的生物联结剂(如mTG)、本发明的金属阳离子(如Ca2+)的重量比为20:150:100:0.2。
结果如图5和表3所示。结果显示,含有本发明的茄科(优选番茄皮)可溶性膳食纤维(SDF)的互穿胶体的硬度最高可达到665g,含有壳聚糖的互穿胶体的硬度最高为359g;含有海藻酸钠的互穿胶体的硬度最高为535g。
表3
上述结果充分表明,本发明的互穿胶体的弹性模量、粘性模量、以及硬度均显著优于含壳聚糖的互穿胶体和含海藻酸钠的互穿胶体。
在本发明提及的所有文献都在本申请中引用作为参考,就如同每一篇文献被单独引用作为参考那样。此外应理解,在阅读了本发明的上述讲授内容之后,本领域技术人员可以对本发明作各种改动或修改,这些等价形式同样落于本申请所附权利要求书所限定的范围。

Claims (10)

1.一种互穿胶体,其特征在于,包括:
可溶性膳食纤维,所述可溶性膳食纤维来源茄科植物;
生物聚合物,所述生物聚合物选自下组:明胶、鱼胶、或其组合;
生物联结剂,所述生物联结剂选自下组:谷氨酰胺转氨酶(mTG)、多酚氧化酶、或其组合;
金属阳离子,所述金属阳离子选自下组:Ca2+、Fe2+、Mg2+、或其组合;
其中,以所述互穿胶体的总重计,所述可溶性膳食纤维与所述生物聚合物的重量比为1:1-100;所述生物联结剂、所述金属阳离子的重量比为1000:0.1-50。
2.如权利要求1所述的互穿胶体,其特征在于,所述可溶性膳食纤维与所述生物聚合物、所述生物联结剂、所述金属阳离子的重量比为5-80:15-500:10-500:0.02-5,较佳地,8-50:50-300:30-300:0.08-3,更佳地,10-30:100-200:50-200:0.1-1,以所述互穿胶体的总重计。
3.如权利要求1所述的互穿胶体,其特征在于,所述可溶性膳食纤维来源茄科番茄属植物。
4.如权利要求1所述的互穿胶体,其特征在于,以所述互穿胶体的总重计,所述可溶性膳食纤维的含量(wt%)为0.05-40,较佳地,0.08-20,更佳地,0.1-10。
5.如权利要求1所述的互穿胶体,其特征在于,以所述互穿胶体的总重计,所述生物聚合物的含量(wt%)为1-50,较佳地,3-30,更佳地,5-20。
6.如权利要求1所述的互穿胶体,其特征在于,以所述互穿胶体的总重计,所述生物联结剂的含量(wt%)为0.5-50,较佳地,1-30,更佳地,3-10。
7.如权利要求1所述的互穿胶体,其特征在于,以所述互穿胶体的总重计,所述金属阳离子的含量(wt%)为0.005-0.8,较佳地,0.008-0.3,更佳地,0.01-0.2。
8.一种互穿胶体医疗器材,其特征在于,所述医疗器材包含权利要求1所述的互穿胶体。
9.一种权利要求1所述互穿胶体的制备方法,其特征在于,包括:
将可溶性膳食纤维、生物聚合物、生物联结剂、金属阳离子混合,从而得到权利要求1所述的互穿胶体,其中,所述可溶性膳食纤维来源茄科植物;所述生物聚合物选自下组:明胶、鱼胶、或其组合;所述生物联结剂选自下组:谷氨酰胺转氨酶(mTG)、多酚氧化酶、或其组合;所述金属离子选自下组:Ca2+、Fe2+、Mg2+、或其组合。
10.一种权利要求1所述互穿胶体的用途,其特征在于,用于制备互穿胶体医疗器材。
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