CN112210103A - 一种食品包装膜及其制备方法 - Google Patents

一种食品包装膜及其制备方法 Download PDF

Info

Publication number
CN112210103A
CN112210103A CN202011211925.2A CN202011211925A CN112210103A CN 112210103 A CN112210103 A CN 112210103A CN 202011211925 A CN202011211925 A CN 202011211925A CN 112210103 A CN112210103 A CN 112210103A
Authority
CN
China
Prior art keywords
glue solution
food packaging
packaging film
film forming
gelling agent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202011211925.2A
Other languages
English (en)
Inventor
赵书敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202011211925.2A priority Critical patent/CN112210103A/zh
Publication of CN112210103A publication Critical patent/CN112210103A/zh
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18Manufacture of films or sheets
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00Processes of treating or compounding macromolecular substances
    • C08J3/24Crosslinking, e.g. vulcanising, of macromolecules
    • C08J3/246Intercrosslinking of at least two polymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2301/00Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2301/08Cellulose derivatives
    • C08J2301/26Cellulose ethers
    • C08J2301/28Alkyl ethers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2303/00Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08J2303/04Starch derivatives
    • C08J2303/08Ethers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2305/00Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2401/00Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C08J2401/08Cellulose derivatives
    • C08J2401/26Cellulose ethers
    • C08J2401/28Alkyl ethers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2403/00Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08J2403/04Starch derivatives
    • C08J2403/08Ethers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2405/00Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02Organic and inorganic ingredients
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/16Halogen-containing compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/05Alcohols; Metal alcoholates
    • C08K5/053Polyhydroxylic alcohols
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/06Ethers; Acetals; Ketals; Ortho-esters
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/09Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098Metal salts of carboxylic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Jellies, Jams, And Syrups (AREA)
  • Wrappers (AREA)

Abstract

本发明涉及一种食品包装膜及其制备方法,该食品包装膜由kappa型卡拉胶与改性刺槐豆胶作为凝胶剂成分,与成膜剂、助凝剂和增塑剂共同制备而得,改善了天然刺槐豆胶作为凝胶成分在成膜过程中粘度大、不易除泡、交联时间长等缺陷,本发明的食品包装膜成膜厚度易控制,膜的机械强度和弹性好、阻水性高,同时具有保鲜效果。

Description

一种食品包装膜及其制备方法
技术领域
本发明属于食品包装领域,具体涉及一种食品包装膜及其制备方法。
技术背景
食用包装膜通常是由可食用性物质包括蛋白质、脂质类、多糖类、纤维衍生物以及淀粉等一种或者多种物质为基质,通过交联形成大分子网状结构并具有生物可降解性的薄膜,与传统人工合成聚合物作为包装材料相比,基于天然生物基质材料能够快速降解,减轻环境污染,并可对食品增加其特有营养和风味等优势。
kappa型卡拉胶作为一种凝胶性能极好的生物成膜材料被广泛的在食品日用品等领域,其具有金属钾离子的高敏感性,使得泌水性增大,且其形成凝胶后刚性较大,凝胶易碎,因此通常需与其他多糖进行复配以改善其机械性能。天然刺槐豆胶与kappa型卡拉胶有较好复配效果,形成的凝胶弹性好,可降低单一kappa型卡拉胶形成的脆性凝胶,但由于其分子量大,水溶液粘度高,水不溶物较多,成膜后容易吸水,阻水性能差,影响其在食品功能产品中的应用,使用范围和储存条件局限性大。
发明内容
为了解决以上的不足,本发明的一个目的在于提供一种kappa型卡拉胶-改性刺槐豆胶作为凝胶剂成分;本发明的另一个目的在于提供一种食品包装膜及其制备方法,提高了食品包装膜的机械性能、阻水性和保鲜效果。
本发明提供一种食品包装膜及其制备方法,所述的食品包装膜由成膜剂、凝胶剂、助凝剂和增塑剂组成;
所述的成膜剂为羟丙甲纤维素、羧甲基纤维素、羟丙基淀粉中的一种或组合;
所述的凝胶剂为kappa型卡拉胶-改性刺槐豆胶;
所述的助凝剂为氯化钾、柠檬酸钾、山梨酸钾中的一种或组合;
所述的增塑剂为甘油、聚乙二醇(PEG200、PEG400)中的一种或组合;
所述的改性刺槐豆胶结构式如(I)所示:
Figure BDA0002759028690000011
式中R为
Figure BDA0002759028690000021
R1~3为C1~3取代烷基,X为卤素。
所述的改性刺槐豆胶的制备步骤为:
1.0~10g天然刺槐豆胶溶于50~100mL异丙醇溶液中,并加入20~50mL20%(w/w)的NaOH溶液,然后放入室温的水浴锅中磁力搅拌2h,加入1.0~10g季铵盐搅拌均匀,调节pH=8,50~80℃下继续搅拌6~10h,反应结束后将得到的溶液倒入含有20~50mL35%(w/w)HCl的甲醇100~500mL中,抽滤得到沉淀物,用甲醇水溶液洗涤沉淀物并过滤,减压下干燥得到。
所述的食品包装膜的制备步骤为:
将0.2~0.5g助凝剂加入至90~150mL蒸馏水中磁力搅拌溶解,凝胶剂和成膜剂以1:3~1:7添加量比加入并搅拌分散均匀,逐渐加热升温至80~90℃,保温1.0h,使胶液充分溶胀,待用;将0.2~0.5g的增塑剂加入至10~50mL蒸馏水中,磁力搅拌加热并保持80~90℃,过滤,将滤液加入至待用胶液中磁力搅拌混合均匀,采用真空脱气装置对其进行高温脱气、除泡0.5h,降温至50~60℃,静置24h,让胶液进一步交联;将5g交联好的胶液倒置在50~60℃平板(10×12cm)模具上用另一块干净的平板模具进行压板,使胶液均匀平铺于模具上,置于25℃、30%RH恒温干燥箱中,干燥2~4h后,脱模,即可。
其中凝胶剂与成膜剂添加量比优选为1:5。
与现有技术相比,本发明具有如下有益效果:
(1)本发明通过kappa型卡拉胶-改性刺槐豆胶作为凝胶剂组成部分,膜的拉伸强度、断裂伸长率提高了10~50%;
(2)本发明一种食品包装膜的阻水系数可达0.0852g·mm·m-2·h-1·kPa-1,延长猪肉保鲜时间。
附图说明
图1为一种食品包装膜实物图。
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明了,下面结合具体实施方式,对本发明进一步详细说明。应该理解,这些描述只是示例性的,而并非要限制本发明的范围。此外,在以下说明中,省略了对公知结构和技术的描述,以避免不必要地混淆本发明的概念。
实施例1
将0.2g助凝剂加入至100mL蒸馏水中磁力搅拌溶解,凝胶剂和成膜剂以1:3~1:7添加量比加入并搅拌分散均匀,逐渐加热升温至80~90℃,保温1.0h,使胶液充分溶胀,待用;将0.2g的增塑剂加入至10mL蒸馏水中,磁力搅拌加热并保持80~90℃,过滤,将滤液加入待用胶液中磁力搅拌混合均匀,采用真空脱气装置对其进行高温脱气、除泡0.5h,降温至50~60℃,静置24h,让胶液进一步交联,将5g交联好的胶液倒置在50~60℃平板(10×12cm)模具上用另一块干净的平板模具进行压板,使胶液均匀平铺于模具上,置于25℃、30%RH恒温干燥箱中,干燥2~4h后,脱模,即可。
其中凝胶剂与成膜剂的投料比如表1所示:
表1为凝胶剂与成膜剂的投料比
Figure BDA0002759028690000031
实施例2空白组
将0.2g助凝剂加入至100mL蒸馏水中磁力搅拌溶解,凝胶剂和成膜剂以1:5添加量比加入并搅拌分散均匀,逐渐加热升温至80~90℃,保温1.0h,使胶液充分溶胀,待用;将0.2g的增塑剂加入至10mL蒸馏水中,磁力搅拌加热并保持80~90℃,过滤,将滤液加入至待用胶液中磁力搅拌混合均匀,采用真空脱气装置对其进行高温脱气、除泡0.5h,降温至50~60℃,静置24h,让胶液进一步交联;将5g交联好的胶液倒置在50~60℃平板(10×12cm)模具上用另一块干净的平板模具进行压板,使胶液均匀平铺于模具上,置于25℃、30%RH恒温干燥箱中,干燥2~4h后,脱模,即可。
实施例中成分说明:
所述的成膜剂为羟丙甲纤维素、羧甲基纤维素、羟丙基淀粉中的一种或组合;
所述的凝胶剂为kappa型卡拉胶-改性刺槐豆胶;
所述的助凝剂为氯化钾、柠檬酸钾、山梨酸钾中的一种或组合;
所述的增塑剂为甘油、聚乙二醇(PEG200、PEG400)中的一种或组合。
实施例3
食品包装膜性能考察方法:经由实施例1和2得到的食用包装膜厚度控制在0.12±0.02mm(GB6673-2001),薄膜拉伸性能测定(GB13022-91)、阻水性能WVP(GB1037-1988)和保鲜效果(观察膜包裹的猪肉在4℃下30天内色泽的变化,0~10分代表色泽度加深)。
上述实施例1和2样品理化性质考察结果见表2;实施例1中样品1-3见附图1。
表2:食品包装膜的性能测定结果
Figure BDA0002759028690000041
对比实施例1和2,由表1结果可知改性刺槐豆胶相比天然刺槐豆胶制备的食品包装膜的拉伸强度、断裂伸长率等机械性能提高了10~50%,膜的刚性和弹性都增加;对比实施例1中的5组样品,凝胶剂与成膜剂比值为1:5时,阻水系数可达0.0852g·mm·m-2·h-1·kPa-1,阻水效果好;保鲜效果测试表明,实施例1中的样品1-3储存的猪肉色泽变化最小,表明抗菌效果最好,可延长猪肉的储存时间,同时表明天然刺槐豆胶无抗菌性。另外,本发明的食品包装膜厚度为0.12±0.02mm,由附图1看出,膜气泡少,透明度高。

Claims (3)

1.一种食品包装膜,其特征在于,所述的食品包装膜由成膜剂、凝胶剂、助凝剂和增塑剂组成;
所述的成膜剂为羟丙甲纤维素、羧甲基纤维素、羟丙基淀粉中的一种或组合;
所述的凝胶剂为kappa型卡拉胶-改性刺槐豆胶;
所述的助凝剂为氯化钾、柠檬酸钾、山梨酸钾中的一种或组合;
所述的增塑剂为甘油、PEG 200、PEG 400中的一种或组合;
所述凝胶剂中的改性刺槐豆胶结构式如(I)所示:
Figure FDA0002759028680000011
式中R为
Figure FDA0002759028680000012
R1~3为C1~3取代烷基,X为卤素。
2.一种食品包装膜的制备方法,其特征在于,包括如下步骤:
将0.2~0.5g助凝剂加入至90~150mL蒸馏水中磁力搅拌溶解,凝胶剂和成膜剂以1:3~1:7添加量比加入并搅拌分散均匀,逐渐加热升温至80~90℃,保温1.0h,使胶液充分溶胀,待用;将0.2~0.5g的增塑剂加入至10~50mL蒸馏水中,磁力搅拌加热并保持80~90℃,过滤,将滤液加入至待用胶液中磁力搅拌混合均匀,采用真空脱气装置对其进行高温脱气、除泡0.5h,降温至50~60℃,静置24h,让胶液进一步交联;将5g交联好的胶液倒置在50~60℃平板(10×12cm)模具上用另一块干净的平板模具进行压板,使胶液均匀平铺于模具上,置于25℃、30%RH恒温干燥箱中,干燥2~4h后,脱模,即可。
3.根据权利要求2所述的一种食品包装膜的制备方法,其特征在于,所述食品包装膜制备步骤中的凝胶剂与成膜剂添加量比为1:5。
CN202011211925.2A 2020-11-03 2020-11-03 一种食品包装膜及其制备方法 Withdrawn CN112210103A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011211925.2A CN112210103A (zh) 2020-11-03 2020-11-03 一种食品包装膜及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011211925.2A CN112210103A (zh) 2020-11-03 2020-11-03 一种食品包装膜及其制备方法

Publications (1)

Publication Number Publication Date
CN112210103A true CN112210103A (zh) 2021-01-12

Family

ID=74058125

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011211925.2A Withdrawn CN112210103A (zh) 2020-11-03 2020-11-03 一种食品包装膜及其制备方法

Country Status (1)

Country Link
CN (1) CN112210103A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115873284A (zh) * 2022-12-14 2023-03-31 华侨大学 一种高温速溶可食包装膜及其制备方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020155200A1 (en) * 2000-12-22 2002-10-24 Reg Macquarrie Edible film formulation
CN1927186A (zh) * 2006-08-26 2007-03-14 青岛大学 一种植物源硬胶囊壳的配方及其制备方法
CN101113325A (zh) * 2007-09-14 2008-01-30 华东理工大学 阳离子半乳甘露聚糖的用途
CN101406704A (zh) * 2008-11-25 2009-04-15 吴国庆 一种新型植物胶囊膜材料及其生产方法
CN103857703A (zh) * 2011-10-03 2014-06-11 罗地亚运营公司 用于制备阳离子半乳甘露聚糖的方法
CN104974267A (zh) * 2014-04-10 2015-10-14 中国石油化工股份有限公司 一种醚化改性刺槐豆胶及其制备方法和含有该刺槐豆胶的水基冻胶压裂液及其应用
CN105338971A (zh) * 2013-06-25 2016-02-17 R.P.谢勒技术有限公司 软胶囊用成壳组合物和软胶囊
CN111454490A (zh) * 2020-04-14 2020-07-28 中国科学院化学研究所 一种制备可食用植物质膜的组合物及其应用

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020155200A1 (en) * 2000-12-22 2002-10-24 Reg Macquarrie Edible film formulation
CN1927186A (zh) * 2006-08-26 2007-03-14 青岛大学 一种植物源硬胶囊壳的配方及其制备方法
CN101113325A (zh) * 2007-09-14 2008-01-30 华东理工大学 阳离子半乳甘露聚糖的用途
CN101406704A (zh) * 2008-11-25 2009-04-15 吴国庆 一种新型植物胶囊膜材料及其生产方法
CN103857703A (zh) * 2011-10-03 2014-06-11 罗地亚运营公司 用于制备阳离子半乳甘露聚糖的方法
CN105338971A (zh) * 2013-06-25 2016-02-17 R.P.谢勒技术有限公司 软胶囊用成壳组合物和软胶囊
CN104974267A (zh) * 2014-04-10 2015-10-14 中国石油化工股份有限公司 一种醚化改性刺槐豆胶及其制备方法和含有该刺槐豆胶的水基冻胶压裂液及其应用
CN111454490A (zh) * 2020-04-14 2020-07-28 中国科学院化学研究所 一种制备可食用植物质膜的组合物及其应用

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
陈璐等: "κ-卡拉胶与刺槐豆胶复配胶的流变学特性研究", 《食品工业科技》 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115873284A (zh) * 2022-12-14 2023-03-31 华侨大学 一种高温速溶可食包装膜及其制备方法

Similar Documents

Publication Publication Date Title
US3962158A (en) Hydrophilic polymer membranes of polyvinyl alcohol and chitosan
US5688775A (en) β-1,3-glucan polysaccharides, compositions, and their preparation and uses
Wilpiszewska Hydrophilic films based on starch and carboxymethyl starch
CN107141519B (zh) 一种改性壳聚糖基超吸水凝胶及其制备和应用
CN111057251B (zh) 一种阳离子水凝胶的制备方法
CN108409988B (zh) 一种海绵状大孔聚乙烯醇水凝胶的制备方法
KR101313430B1 (ko) 피부온도 감응형 하이드로겔 조성물 및 그 제조방법
CN112210103A (zh) 一种食品包装膜及其制备方法
CN109294001B (zh) 一种均匀内交联海藻酸钠膜及其制备方法
CN101565482B (zh) 聚乙烯醇基涂膜保鲜包装新材料及制备工艺
CN102585265B (zh) 一种戊二醛溶液交联的明胶/pva复合膜的制备方法
JPH04275346A (ja) キトサンを含有している相容性配合物
KR20140072716A (ko) 헤이즈가 개선된 필름
CN102941023A (zh) 一种细菌纤维素血液透析膜
TWI634910B (zh) 製備硬膠囊的水性成分及該水性成分之製備方法、以該水性成分製備之硬膠囊以及回收該硬膠囊廢料之方法
JPH0611810B2 (ja) 多孔性キチン成形体及びその製造方法
CN102558589B (zh) 一种甲醛交联明胶/pva复合膜的制备方法
CN109354632B (zh) 一种羧甲基氨基多糖衍生物及其制备方法和应用
CN107325316A (zh) 一种高性能微生物源多聚葡萄糖基可降解膜及其制备方法
JP5385928B2 (ja) ポリビニルアルコール系ヒドロゲルの使用方法及びその用途
JP5237888B2 (ja) 水性ゲル組成物
JPH05308910A (ja) ヒートシール性の良好な耐水性可食フィルム
CN114907623A (zh) 一种蛋白水解物-多酚-酯化多糖非共价交联可食膜及其制备方法
CN107828087A (zh) 一种可降解塑料及其制备方法
CN102585263B (zh) 一种用有机蒙脱土改良的明胶/pva复合膜的制备方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20210112

WW01 Invention patent application withdrawn after publication