CN108685058A - 一种高品质低油脂竹笋脆片的加工方法 - Google Patents

一种高品质低油脂竹笋脆片的加工方法 Download PDF

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CN108685058A
CN108685058A CN201810514938.3A CN201810514938A CN108685058A CN 108685058 A CN108685058 A CN 108685058A CN 201810514938 A CN201810514938 A CN 201810514938A CN 108685058 A CN108685058 A CN 108685058A
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涂宗财
王淑好
王辉
叶云花
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    • AHUMAN NECESSITIES
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    • A23L5/00Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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Abstract

一种高品质低油脂竹笋脆片的加工方法,以新鲜竹笋为原料,经原料预处理后,NaCl溶液浸泡去除苦涩味提高竹笋品质,最后经充氮分段油炸。本发明具有以下优点:(1)采用NaCl溶液浸泡去除苦涩味,较化学脱苦等方法大大减少添加剂的摄入,提高产品品质。(2)采用分段式充氮油炸方法,油脂含量低于3g/100g,符合低油脂食品标准。(3)采用空气氮气混合物为油炸环境,降低产品氧化程度,更加绿色健康。

Description

一种高品质低油脂竹笋脆片的加工方法
技术领域
本发明涉及一种高品质低油脂竹笋脆片的加工方法,属于农副产品加工领域。
背景技术
竹笋含有较多的木质素,在油炸过程中变硬从而较难咀嚼,因此很难做成油炸食品。尽管现在有一些油炸竹笋的做法,但都是采用裹上淀粉后放入油锅里油炸的方法,此法制作出的产品油脂含量高,不符合现代健康膳食理念。近年来也有人将空气油炸运用到果蔬脆片的加工中,但其主要运用高速空气循环,降低油脂添加量,但是会发生产品氧化,降低产品品质。如何制作出既具有油炸竹笋的脆感又符合现代健康膳食理念的产品是目前尚未解决的问题。
发明内容
本发明以新鲜竹笋为原料,采用分段式油炸方法逐步充入氮气改变氮气空气体积比,既可解决传统方法油脂含量高的问题,降低产品氧化程度,还可保持竹笋的原有风味,带来一种类似薯片的口感。
一种高品质低油脂的竹笋脆片,其特征包括:
(1)原料预处理:新鲜竹笋去除外表皮,用清水清洗干净,切成1-1.5cm的薄片;
(2)烫煮漂洗:将竹笋片用自来水冲洗3-5次后,放入质量百分比浓度为5%的NaCl溶液中烫煮,水开后继续煮5-10分钟,然后捞出用清水冲洗;
(3)浸泡:将1kg竹笋放入3L质量百分比浓度0.4%的NaCl溶液中浸泡12h;
(4)沥干:将浸泡后竹笋用自来水冲洗3-5次,捞出沥干;
(5)过油:倒入食用油100ml放入锅中预热,将沥干后的竹笋放入锅中翻炒1-2分钟;
(6)分段式油炸:将过油竹笋片放入100℃空气油炸锅内油炸10min,油炸环境为空气;将竹笋片捞起,立即放入140℃空气油炸锅内油炸16min,油炸环境为空气和氮气混合物,空气和氮气的体积比1:3;再次将竹笋片捞起,放入80℃空气油炸锅内油炸14min,油炸环境为空气和氮气混合物,空气和氮气的体积比1:1。
本发明工艺与现有技术不同点在于:
1、传统工艺采用化学试剂进行脱苦处理可能引起试剂的残留,本发明采用先烫煮后浸泡的方式,分别使用质量百分比浓度5%NaCl溶液和0.4%NaCl溶液,得到基本无苦味的竹笋片。
2、传统油炸方法中所需食用油量大,并且常常在油炸前裹上淀粉达到酥脆的口感同时会吸附更多的油脂,使竹笋的营养价值降低。本发明可有效降低油脂含量使得产品符合低油脂食品的要求。
3、传统空气油炸方法利用高温空气快速循环带动水汽的蒸发从而达到油炸的目的,本发明采用分段式充氮油炸方法,全空气油炸可以迅速带来油炸的酥脆感,空气氮气比1:3油炸可以在油炸的同时降低氧化的可能性,达到抗氧化的效果,空气氮气比1:1油炸能够丰富竹笋的酥脆口感;逐步改变气体含量可以改善单一气体油炸的品质获得更好的酥脆口感,分三段式油炸既可有效预防全空气油炸的氧化作用又能提高油炸效率缩短油炸时间;得到的产品保持低油脂食品的健康要求,同时氮气的充入可有效减少氧化对产品的影响,延长产品的保质期,保护产品良好的色泽,避免产生饱和脂肪酸。
具体实施方式
下面结合实施例对本发明做进一步说明。
实施例1:
(1)原料预处理:新鲜竹笋去除外表皮,用清水清洗干净,切成1.5cm的薄片;
(2)烫煮漂洗:将竹笋片用自来水冲洗5次后,放入质量百分比浓度为5%的NaCl溶液中烫煮,水开后继续煮8分钟,然后捞出用清水冲洗;
(3)浸泡:将1kg竹笋放入3L质量百分比浓度0.4%的NaCl溶液中浸泡12h;
(4)沥干:将浸泡后竹笋用自来水冲洗4次,捞出沥干;
(5)过油:倒入食用油100ml放入锅中预热,将沥干后的竹笋放入锅中翻炒1分钟;
(6)分段式油炸:将过油竹笋片放入100℃空气油炸锅内油炸10min,油炸环境为空气;将竹笋片捞起,立即放入140℃空气油炸锅内油炸16min,油炸环境为空气;再次将竹笋片捞起,放入80℃空气油炸锅内油炸14min,油炸环境为空气。
(7)包装。
实施例2
(1)原料预处理:新鲜竹笋去除外表皮,用清水清洗干净,切成1.5cm的薄片;
(2)烫煮漂洗:将竹笋片用自来水冲洗5次后,放入质量百分比浓度为5%的NaCl溶液中烫煮,水开后继续煮8分钟,然后捞出用清水冲洗;
(3)浸泡:将1kg竹笋放入3L质量百分比浓度0.4%的NaCl溶液中浸泡12h;
(4)沥干:将浸泡后竹笋用自来水冲洗4次,捞出沥干;
(5)过油:倒入食用油100ml放入锅中预热,将沥干后的竹笋放入锅中翻炒1分钟;
(6)分段式油炸:将过油竹笋片放入100℃空气油炸锅内油炸10min,油炸环境为空气;将竹笋片捞起,立即放入140℃空气油炸锅内油炸16min,油炸环境为空气;再次将竹笋片捞起,放入80℃空气油炸锅内油炸14min,油炸环境为空气和氮气混合物,空气和氮气的体积比1:1。
(7)包装。
实施例3
(1)原料预处理:新鲜竹笋去除外表皮,用清水清洗干净,切成1.5cm的薄片;
(2)烫煮漂洗:将竹笋片用自来水冲洗5次后,放入质量百分比浓度为5%的NaCl溶液中烫煮,水开后继续煮8分钟,然后捞出用清水冲洗;
(3)浸泡:将1kg竹笋放入3L质量百分比浓度0.4%的NaCl溶液中浸泡12h;
(4)沥干:将浸泡后竹笋用自来水冲洗4次,捞出沥干;
(5)过油:倒入食用油100ml放入锅中预热,将沥干后的竹笋放入锅中翻炒1分钟;
(6)分段式油炸:将过油竹笋片放入100℃空气油炸锅内油炸10min,油炸环境为空气;将竹笋片捞起,立即放入140℃空气油炸锅内油炸16min,油炸环境为空气和氮气混合物,空气和氮气的体积比1:3;再次将竹笋片捞起,放入80℃空气油炸锅内油炸14min,油炸环境为空气。
(7)包装。
实施例4:
(1)原料预处理:新鲜竹笋去除外表皮,用清水清洗干净,切成1.5cm的薄片;
(2)烫煮漂洗:将竹笋片用自来水冲洗5次后,放入质量百分比浓度为5%的NaCl溶液中烫煮,水开后继续煮8分钟,然后捞出用清水冲洗;
(3)浸泡:将1kg竹笋放入3L质量百分比浓度0.4%的NaCl溶液中浸泡12h;
(4)沥干:将浸泡后竹笋用自来水冲洗4次,捞出沥干;
(5)过油:倒入食用油100ml放入锅中预热,将沥干后的竹笋放入锅中翻炒1分钟;
(6)分段式油炸:将过油竹笋片放入100℃空气油炸锅内油炸10min,油炸环境为空气;将竹笋片捞起,立即放入140℃空气油炸锅内油炸16min,油炸环境为空气和氮气混合物,空气和氮气的体积比1:3;再次将竹笋片捞起,放入80℃空气油炸锅内油炸14min,油炸环境为空气和氮气混合物,空气和氮气的体积比1:1。
(7)包装。
实例效果分析如下:
油炸竹笋理化指标
与实施例1、实施例2和实施例3相比较,实施例4生产所得到的竹笋脆片含油量明显较低,沥油后其油脂含量低于3g/100g,过氧化值也最低。本发明在传统空气油炸的基础上进行改进得到分段式充氮油炸的方法,达到酥脆竹笋口感的同时能有效减少油脂含量和过氧化值,产品品质明显提升。

Claims (1)

1.一种高品质低油脂竹笋脆片的制作方法,其特征在于包括如下步骤:
(1)原料预处理:新鲜竹笋去除外表皮,用清水清洗干净,切成1-1.5cm的薄片;
(2)烫煮漂洗:将竹笋片用自来水冲洗3-5次后,放入质量百分比浓度为5%的NaCl溶液中烫煮,水开后继续煮5-10分钟,然后捞出用清水冲洗;
(3)浸泡:将1kg竹笋放入3L质量百分比浓度0.4%的NaCl溶液中浸泡12h;
(4)沥干:将浸泡后竹笋用自来水冲洗3-5次,捞出沥干;
(5)过油:倒入食用油100ml放入锅中预热,将沥干后的竹笋放入锅中翻炒1-2分钟;
(6)分段式油炸:将过油竹笋片放入100℃空气油炸锅内油炸10min,油炸环境为空气;将竹笋片捞起,立即放入140℃空气油炸锅内油炸16min,油炸环境为空气和氮气混合物,空气和氮气的体积比1:3;再次将竹笋片捞起,放入80℃空气油炸锅内油炸14min,油炸环境为空气和氮气混合物,空气和氮气的体积比1:1。
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