CN111642661A - 一种高浓度鲜榨椰浆的制备方法 - Google Patents
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Abstract
本发明提供一种高浓度鲜榨椰浆的制备方法,包括以下步骤:椰肉喷氮预冷、鲜榨椰浆、椰浆气化、气液分离、调配、均质得到的高浓度鲜榨椰浆,具有椰子浆的芳香,口感香浓、细腻,且营养成分保留高,稳定性好。
Description
技术领域
本发明涉及食品加工领域,特别涉及一种高浓度鲜榨椰浆的制备方法。
背景技术
椰浆中自身具有椰蛋白,椰蛋白带有正电荷,像乳化剂一样附着在椰浆脂肪表面,能组织脂肪凝聚,但是天然的椰蛋白稳定性较差,表面活性较低,导致椰浆品质稳定性差,在加工过程或储藏过程中颜色发生变化的现象,不仅改变了椰浆的原有风味和颜色,同时引起椰浆的营养物质流失,甚至变质,而人体必需氨基酸容易在褐变有关的美拉德反应中失去。
发明内容
鉴以此,本发明提出一种高浓度鲜榨椰浆的制备方法,来解决上述问题。
本发明的技术方案是这样实现的:一种高浓度鲜榨椰浆的制备方法,
S1、椰肉喷氮预冷:将椰肉预处理后,在温度为0~5℃下经液氮预冷;
S2、鲜榨椰浆:将上述S1的椰肉破碎,破碎椰丝粒径为2~4mm,压榨2~4次,得到压榨的椰浆,压榨时添加温度为60~70℃水,椰肉和水的重量比为30~50:1,过100~120目筛网过滤分离其中的椰渣,得到椰浆,所述椰肉取自海南老椰子;
S3、椰浆气化:将鲜榨的椰浆放入气化炉中进行气化80~120s,得到气液混合物;
S4、气液分离:通过非循环加热瞬时真空蒸发器对上述气液混合物进行气液分离,控制真空度为80~110KPa,温度为60~90℃,时间40~60min,得到具有椰香味的椰浆;
S5、调配:将乳化剂、增稠剂、抗氧化剂加用60~70℃水溶解,搅拌均匀后放入胶体磨进行处理,得到料液,将料液投入到椰浆调配锅中,搅拌均匀,温度60~85℃,得到pH为6.0~7.0的椰浆混合液;
S6、均质:对椰浆混合物倒入均质机中进行均质,低压3~5Mpa,高压25~30Mpa,得到高浓度鲜榨椰浆,将调配好的高浓度鲜榨椰浆进行灌装、封口、灭菌,灭菌后冷却至37~42℃,入库。
进一步的,所述鲜榨采用螺旋式加水压榨。
进一步的,所述乳化剂为聚氧乙烯山梨醉酐单硬脂酸酯,增稠剂为乙酰化二淀粉磷酸酯、黄原胶、羧甲基纤维素钠,抗氧剂为焦亚硫酸钠。
进一步的,所述乳化剂为S4步骤所得的椰浆质量的0.1~0.3%,增稠剂为S4步骤所得的椰浆质量的0.2~0.4%,抗氧剂为S4步骤所得的椰浆质量的0.005~0.01%。
进一步的,所述S6步骤中,灭菌温度为120~140℃,灭菌时间30~60min。
进一步的,所述乙酰化二淀粉磷酸酯、黄原胶、羧甲基纤维素钠的质量比为(0.1~0.2):(0.2~0.4):(0.1~0.15)。
进一步的,所述黄原胶、羧甲基纤维素钠为水溶性膳食纤维。
进一步的,所述高浓度鲜榨椰浆食用时可以稀释2~6倍。
与现有技术相比,本发明的有益效果是:
本发明制得的高浓度椰浆具有椰子浆的芳香,口感香浓、细腻,且营养成分保留高,稳定性好,其中采用喷氮预冷使惰性气体隔绝氧暴露,有助于压榨时能保护椰肉中的酶活性和功能性组分,避免营养成分损失;气化是使椰浆中含有椰香成分的小分子气化,再进行气液分离,将椰浆中果糖、果酸及其他非挥发的热量成分分离出去,保留氨基酸等营养成分,均质后的椰浆更加稳定;另外,加入乳化剂和增稠剂能提高椰蛋白的稳定性,利用聚氧乙烯山梨醉酐单硬脂酸酯的特有结构,即具有更大的三维结构和接触表面,可以更好的将椰浆分散其中,而增稠剂与椰蛋白形成极性键,增大表面活性,显著提高椰蛋白的稳定性。
具体实施方式
为了更好理解本发明技术内容,下面提供具体实施例,对本发明做进一步的说明。
本发明实施例所用的实验方法如无特殊说明,均为常规方法。
本发明实施例所用的材料、试剂等,如无特殊说明,均可从商业途径得到。
实施例1
S1、椰肉喷氮预冷:将椰肉预处理后,在温度为0℃下经液氮预冷;
S2、鲜榨椰浆:将上述S1的椰肉破碎,破碎椰丝粒径为2mm,压榨2次,得到压榨的椰浆,压榨时添加温度为60℃水,椰肉和水的重量比为30:1,过100目筛网过滤分离其中的椰渣,得到椰浆;
S3、椰浆气化:将鲜榨的椰浆放入气化炉中进行气化80s,得到气液混合物;
S4、气液分离:通过非循环加热瞬时真空蒸发器对上述气液混合物进行气液分离,控制真空度为80KPa,温度为60℃,时间40min,得到具有椰香味的椰浆;
S5、调配:将乳化剂、增稠剂、抗氧化剂加用60℃水溶解,搅拌均匀后放入胶体磨进行处理,得到料液,将料液投入到椰浆调配锅中,搅拌均匀,温度60℃,得到pH为6.0的椰浆混合液;所述乳化剂为聚氧乙烯山梨醉酐单硬脂酸酯,乳化剂为S4步骤所得的椰浆质量的0.1%,增稠剂为乙酰化二淀粉磷酸酯、黄原胶、羧甲基纤维素钠,增稠剂为S4步骤所得的椰浆质量的0.2%,抗氧剂为焦亚硫酸钠,为S4步骤所得的椰浆质量的0.005%;所述乙酰化二淀粉磷酸酯、黄原胶、羧甲基纤维素钠的质量比为0.1:0.2:0.1;所述黄原胶、羧甲基纤维素钠为水溶性膳食纤维;
S6、均质:对椰浆混合物倒入均质机中进行均质,均质压力均为5Mpa,得到高浓度鲜榨椰浆,将调配好的高浓度鲜榨椰浆进行灌装、封口、灭菌,灭菌后冷却至37℃,灭菌温度为120℃,灭菌时间30min,入库,所述高浓度鲜榨椰浆食用时可以稀释2倍。
实施例2
S1、椰肉喷氮预冷:将海南老椰子椰肉预处理后,在温度为5℃下经液氮预冷;
S2、鲜榨椰浆:将上述S1的椰肉破碎,破碎椰丝粒径为4mm,采用螺旋式加水压榨4次,得到压榨的椰浆,压榨时添加温度为70℃水,椰肉和水的重量比为50:1,过120目筛网过滤分离其中的椰渣,得到椰浆;
S3、椰浆气化:将鲜榨的椰浆放入气化炉进行气化120s,得到气液混合物;
S4、气液分离:通过非循环加热瞬时真空蒸发器对上述气液混合物进行气液分离,控制真空度为110KPa,温度为90℃,时间60min,得到具有椰香味的椰浆;
S5、调配:将乳化剂、增稠剂、抗氧化剂加用70℃水溶解,搅拌均匀后放入胶体磨进行处理,得到料液,将料液投入到椰浆调配锅中,搅拌均匀,温度85℃,得到pH为7.0的椰浆混合液;所述乳化剂为聚氧乙烯山梨醉酐单硬脂酸酯,乳化剂为S4步骤所得的椰浆质量的0.3%,增稠剂为乙酰化二淀粉磷酸酯、黄原胶、羧甲基纤维素钠,增稠剂为S4步骤所得的椰浆质量的0.4%,抗氧剂为焦亚硫酸钠,为S4步骤所得的椰浆质量的0.01%;所述乙酰化二淀粉磷酸酯、黄原胶、羧甲基纤维素钠的质量比为0.1:0.2:0.1,所述黄原胶、羧甲基纤维素钠为水溶性膳食纤维。
S6、均质:对椰浆混合物倒入均质机中进行均质,均质压力均为30Mpa,得到高浓度鲜榨椰浆,将调配好的高浓度鲜榨椰浆进行灌装、封口、灭菌,灭菌后冷却至42℃,灭菌温度为140℃,灭菌时间60min,入库,所述高浓度鲜榨椰浆食用时可以稀释2倍。
实施例3
S1、椰肉喷氮预冷:将海南老椰子椰肉预处理后,在温度为3℃下经液氮预冷;
S2、鲜榨椰浆:将上述S1的椰肉破碎,破碎椰丝粒径为3mm,压榨3次,采用螺旋式加水得到压榨的椰浆,压榨时添加温度为65℃水,椰肉和水的重量比为40:1,过110目筛网过滤分离其中的椰渣,得到椰浆;
S3、椰浆气化:将鲜榨的椰浆放入气化炉中进行气化90s,得到气液混合物;
S4、气液分离:通过非循环加热瞬时真空蒸发器对上述气液混合物进行气液分离,控制真空度为90KPa,温度为70℃,时间50min,得到具有椰香味的椰浆;
S5、调配:将乳化剂、增稠剂、抗氧化剂加用65℃水溶解,搅拌均匀后放入胶体磨进行处理,得到料液,将料液投入到椰浆调配锅中,搅拌均匀,温度75℃,得到pH为6.0的椰浆混合液,所述乳化剂为聚氧乙烯山梨醉酐单硬脂酸酯,乳化剂为S4步骤所得的椰浆质量的0.2%,增稠剂为乙酰化二淀粉磷酸酯、黄原胶、羧甲基纤维素钠,增稠剂为S4步骤所得的椰浆质量的0.3%,抗氧剂为焦亚硫酸钠,抗氧剂为S4步骤所得的椰浆质量的0.008%;所述乙酰化二淀粉磷酸酯、黄原胶、羧甲基纤维素钠的质量比为0.1:0.3:0.12,所述黄原胶、羧甲基纤维素钠为水溶性膳食纤维;
S6、均质:对椰浆混合物倒入均质机中进行均质,均质压力均为17Mpa,得到高浓度鲜榨椰浆,将调配好的高浓度鲜榨椰浆进行灌装、封口、灭菌,灭菌后冷却至40℃,灭菌温度为130℃,灭菌时间50min,入库,所述高浓度鲜榨椰浆食用时可以稀释4倍。
实施例4
本实施例与实施例3的区别在于,所述乳化剂为聚氧乙烯山梨醉酐单硬脂酸酯0.4%,增稠剂为乙酰化二淀粉磷酸酯、黄原胶、羧甲基纤维素钠0.5%,抗氧剂为焦亚硫酸钠0.02%。
实施例5
本实施例与实施例3的区别在于,所述乙酰化二淀粉磷酸酯、黄原胶、羧甲基纤维素钠的质量比为0.3:0.1:0.2。
对比例1
本对比例和实施例3的区别在于,所述椰肉未经喷氮,将椰肉至于0~5℃下预冷。
对比例2
本对比例和实施例3的区别在于,所述椰肉和水的重量比为20:1。
对比例3
本对比例和实施例3的区别在于,未经椰浆气化步骤。
对比例4
本对比例和实施例3的区别在于,椰浆气化后,未经气液分离。
对比例5
本对比例和实施例3的区别在于,气液分离控制真空度为70KPa。
一、氨基酸含量测定
赖氨酸(%) | 天冬氨酸(%) | 谷氨酸(%) | 组氨酸(%) | |
实施例1 | 0.17 | 0.52 | 1.29 | 0.19 |
实施例2 | 0.16 | 0.53 | 1.30 | 0.20 |
实施例3 | 0.17 | 0.56 | 1.38 | 0.22 |
实施例4 | 0.15 | 0.48 | 1.25 | 0.21 |
实施例5 | 0.15 | 0.49 | 1.22 | 0.22 |
对比例1 | 0.12 | 0.29 | 0.78 | 0.16 |
对比例2 | 0.13 | 0.25 | 0.69 | 0.12 |
对比例3 | 0.11 | 0.23 | 0.72 | 0.13 |
对比例4 | 0.10 | 0.20 | 0.71 | 0.13 |
对比例5 | 0.11 | 0.26 | 0.80 | 0.12 |
由上表可知,实施例1~5和对比例1比较,将椰肉鲜榨前进行喷氮预冷,使惰性气体隔绝氧暴露,能保护椰肉中的酶活性和功能性组分,和对比例2比较,特定的椰肉和水的比例才能将椰肉中的营养成分溶出;和对比例3比较,将椰浆气化有助于椰浆中气化小分子含有椰香成分;对比例4、5中,对气液混合物在特定的真空度下气液分离,将椰浆中的果糖、果酸中其他非挥发的热量成分分离出去,保留椰浆中的营养成分。
二、稳定性测定
测定方法:椰浆成品4~8℃冷藏静置12小时、常温静置4小时及煮沸3分钟,观察是否会油水分离,油脂是否凝聚。
测定标准:
测定结果:
由测定结果可知,经本发明的特定的技术工艺所制得的椰浆组织均匀细腻,无油水分离现象。
三、储藏期品质测定
测定方法:椰浆成品于室温下放置12个月,观察是否会油水分离,油脂是否凝聚,是否产生酸败味。
测定标准:
测定结果:
常温12个月 | |
实施例1 | 5.0 |
实施例2 | 5.0 |
实施例3 | 5.0 |
实施例4 | 5.0 |
实施例5 | 5.0 |
对比例1 | 3.5 |
对比例2 | 4.1 |
对比例3 | 3.3 |
对比例4 | 3.0 |
对比例5 | 3.9 |
由上述结果可知,经本发明的制备方法,鲜榨椰浆后气化处理和气液分离等步骤,使得椰浆椰香浓厚、储藏稳定。
四、感官评价
随机挑选100人,分为10组,每组由10人组成感官评定小组,测定对色泽、气味、口感3项指标进行感官评定,评定标准如下表所示。
评价标准:
将实施例1~5和对比例1~5的椰浆的品质测试结果如下表:
组别 | 色泽 | 气味 | 口感 | 总分 |
实施例1 | 27 | 29 | 38 | 94 |
实施例2 | 28 | 28 | 39 | 95 |
实施例3 | 30 | 30 | 39 | 99 |
实施例4 | 28 | 29 | 39 | 96 |
实施例5 | 28 | 28 | 37 | 93 |
对比例1 | 21 | 24 | 22 | 67 |
对比例2 | 22 | 22 | 19 | 63 |
对比例3 | 18 | 25 | 19 | 62 |
对比例4 | 19 | 22 | 17 | 58 |
对比例5 | 19 | 20 | 15 | 54 |
由上表感官评定结果可知,本发明的高浓度椰浆,呈乳白色,具有椰子浆的芳香,口感香浓、细腻。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (8)
1.一种高浓度鲜榨椰浆的制备方法,其特征在于:包括以下步骤:
S1、椰肉喷氮预冷:将椰肉预处理后,在温度为0~5℃下经液氮预冷;
S2、鲜榨椰浆:将上述S1的椰肉破碎,破碎椰丝粒径为2~4mm,压榨2~4次,得到压榨的椰浆,压榨时添加温度为60~70℃水,椰肉和水的重量比为30~50:1,过100~120目筛网过滤分离其中的椰渣,得到椰浆;
S3、椰浆气化:将鲜榨的椰浆放入气化炉中进行气化80~120s,得到气液混合物;
S4、气液分离:通过非循环加热瞬时真空蒸发器对上述气液混合物进行气液分离,控制真空度为80~110KPa,温度为60~90℃,时间40~60min,得到具有椰香味的椰浆;
S5、调配:将乳化剂、增稠剂、抗氧化剂加用60~70℃水溶解,搅拌均匀后放入胶体磨进行处理,得到料液,将料液投入到椰浆调配锅中,搅拌均匀,温度60~85℃,得到pH为6.0~7.0的椰浆混合液;
S6、均质:对椰浆混合物倒入均质机中进行均质,均质压力均为5~30Mpa,得到高浓度鲜榨椰浆,将调配好的高浓度鲜榨椰浆进行灌装、封口、灭菌,灭菌后冷却至37~42℃,入库。
2.如权利要求1所述的一种高浓度鲜榨椰浆的制备方法,其特征在于:所述鲜榨采用螺旋式加水压榨。
3.如权利要求1所述的一种高浓度鲜榨椰浆的制备方法,其特征在于:所述乳化剂为聚氧乙烯山梨醉酐单硬脂酸酯,增稠剂为乙酰化二淀粉磷酸酯、黄原胶、羧甲基纤维素钠,抗氧剂为焦亚硫酸钠。
4.如权利要求1所述的一种高浓度鲜榨椰浆的制备方法,其特征在于:所述乳化剂为S4步骤所得的椰浆质量的0.1~0.3%,增稠剂为S4步骤所得的椰浆质量的0.2~0.4%,抗氧剂为S4步骤所得的椰浆质量的0.005~0.01%。
5.如权利要求1所述的一种高浓度鲜榨椰浆的制备方法,其特征在于:所述S6步骤中,灭菌温度为120~121℃,灭菌时间30~60min。
6.如权利要求4所述的一种高浓度鲜榨椰浆的制备方法,其特征在于:所述乙酰化二淀粉磷酸酯、黄原胶、羧甲基纤维素钠的质量比为(0.1~0.2):(0.2~0.4):(0.1~0.15)。
7.如权利要求3所述的一种高浓度鲜榨椰浆的制备方法,其特征在于:所述黄原胶、羧甲基纤维素钠为水溶性膳食纤维。
8.如权利要求1~7所述的一种高浓度鲜榨椰浆的制备方法,其特征在于:所述高浓度鲜榨椰浆食用时可以稀释2~6倍。
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