CN108477543B - 一种高营养无添加芒果干及加工方法 - Google Patents
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Abstract
本发明公开了一种高营养无添加芒果干及加工方法。所述芒果干系采用临沧市永德县种植的椰香、马切苏和缅三芒果品种中的一种或几种为初始原料,于七至九成熟时采收,糖分含量在13%~15%。采摘的鲜芒果经浸泡、孵育、辐照制得用于本发明芒果干加工的特定原料,特定原料经削皮、切片、脱水,即得本发明高营养无添加的芒果干。其中,芒果干水分含量为15%~20%,总糖含量为45%~57%,可滴定酸含量为0.9%~1.2%,可溶性固形物含量为55%~66%。相较于原芒果而言,采用上述方法制得的芒果干不仅保留了原芒果特有外观、滋味和清香味,肉质细腻,软硬度适中,还实现了原芒果营养成分最大限度转化和保留、总糖和可滴定酸最佳含量共同决定最佳口感等实质性的技术效果。
Description
技术领域
本发明涉及食品生产领域,尤其涉及一种高营养无添加芒果干及其加工方法。
技术背景
芒果,又名杧果、檬果、庵罗果、庵罗子、沙果梨、蜜望子、望果等,为漆树科芒果属热带常绿大乔木,高9~27m,树的寿命长达几百年。芒果是世界卫生组织公布的十大最佳水果之一,其产量居世界水果第5位。祖国医学认为,芒果甘、酸、凉,益胃止呕,理气止咳。《食性本草》记载:“妇人经脉不通,丈夫营卫中血脉不行,叶可作汤疗渴疾”。现代科学研究发现,芒果的营养价值很高,每100g芒果中含有热量32~50Kcal、蛋白质0.65~1.31g、脂肪0.1~0.9g、碳水化合物11~19g、膳食纤维1.3g、钙7mg、铁0.2~0.5mg、磷11~12mg、钾138~304mg、钠2.8~3.6mg、铜0.06~0.1g、镁10~14mg、锌0.09~0.14mg、硒0.25~1.44μg、锰0.2~0.24mg、VB10.01~0.03mg、VB2 0.01~0.04mg、尼克酸0.3~0.4mg、VC 14~41mg、VE1.21mg、VA 150~347mg、胡萝卜素897~2080μg。其中,胡萝卜素的含量是苹果的45~104倍,VC的含量是苹果的3~10倍,硒是苹果的2~12倍,VB1、VB2的含量与热带水果柑桔和菠萝相比也毫不逊色。
芒果属于呼吸跃变型果实采收正值夏秋季,采后迅速后熟,易腐烂,且芒果对低温敏感,易遭受冷害,不耐贮藏。因此,新鲜芒果的深加工成为解决芒果不耐贮藏的主要途径之一。目前,中国芒果主要的加工方法是将其制备成芒果干,但现有技术在制备芒果干时,未考虑种源及种植地优化筛选、很少考虑营养成分最大限度转化及保留,为达到保质和口感,加工过程添加防腐、矫味、保鲜剂,导致其失去芒果最原有的滋味和清香味,外观和口感不纯正的同时,营养成分流失严重。
一种原味芒果干的制备方法(专利申请公布号:201510772973.1)公开了一种原味芒果干的制备方法,该原味芒果干是选用无病虫害的鲜芒果经催熟、消毒、清洗后,去皮、切片、核得到果肉后,进行低温无硫糖渍,采用分段干燥,烘至半干后,回软、拌酸再进一步烘干,进行低温冷贮藏、包装得到成品;该发明所得的芒果干水分≤18%、总糖≤70%、二氧化硫残留≤0.02g/kg。
本发明通过对芒果种源的优化筛选,选用临沧市永德县种植的椰香、马切苏和缅三芒果品种中的一种或几种为初始原料,于七至九成熟时采摘,控制糖分含量为13%~15%。通过本发明技术方案制成高营养无添加的芒果干,不仅保留了原芒果特有外观、滋味和清香味,肉质细腻,软硬度适中外,还实现了原芒果营养成分最大限度转化和保留、总糖和可滴定酸最佳含量共同决定最佳口感等实质性的技术效果。对大力发展当地芒果深加工技术,延长芒果产业链,带动芒果深加工增值具有重要的指导意义。
发明内容
本发明旨在解决目前芒果加工过程的研发应用不足,以临沧市永德县种植的椰香、马切苏和缅三芒果品种中的一种或几种为初始原料,于七至九成熟时采摘鲜芒果,控制总糖含量为13%~15%。经浸泡、孵育、辐照制成加工芒果干特定原料,特定原料经削皮、切片、脱水制得一种高营养无添加的芒果干。该芒果干不仅保留了原芒果特有滋味和清香味、肉质细腻、软硬度适中外,还实现了原芒果营养成分最大限度转化和保留,总糖和可滴定酸最佳含量共同决定最佳口感等实质性的技术效果。
本发明的第一目的是提供一种芒果干的加工方法。第二目的是提供一种高营养无添加的芒果干。
本发明的第一目的是采用以下技术方案来实现的:
本发明提供了一种高营养无添加的芒果干及加工方法。具体步骤如下:
步骤1:初始原料的选择
所述芒果干,原材料采自临沧市永德县,品种为椰香,马切苏和缅三中的一种或几种,成熟度在七至九成熟,糖分含量为13%~15%。
步骤2:特定原料的制备
(1)浸泡与孵育
将芒果放入50~60℃,优选为53~58℃,进一步优选为54~57℃的热水中浸泡3~10min,优选为3~8min,进一步优选为4~6min;再放入温度为20~34℃,优选为22~32℃,进一步优选为24~28℃,最优选为25~27℃的室内堆放在稻草、大米、桔梗中的一种或几种上,孵育2天。
(2)辐照
从孵育2天的芒果中选出颜色变为橙黄色的,用60Co,137Cs,γ射线,X射线,紫外中的一种或几种对芒果进行营养成分的转化。其中,用到的60Co,137Cs的剂量是300~1000Gy,优选为350~850Gy,进一步优选为400~550Gy。
步骤3:芒果干的制备
将特定原料进行削皮、切片,削皮厚度为1.5~2.5mm,切片厚度为3~5mm,优选为3.5~4.8mm,进一步优选为3.8~4.5mm;将切好的芒果放入5H-3TQ1全自动烘干机中,一开始调节温度为55~65℃烘烤3~4h,后将温度调至50~55℃烘烤2h,每当烘箱内湿度达到80%时进行一次抽风,最后一次抽风后,当湿度为40%时恒温65℃烘烤3~4h出锅(烘烤中每小时进行一次轮转)。烘烤后水分含量为15%~20%,优选为15%~18%,进一步优选为16%~17%。
通过本发明制备的一种高营养无添加芒果干,不仅保留了原芒果特有外观、滋味和清香味,肉质细腻,软硬度适中外,还实现了原芒果营养成分最大限度转化和保留,总糖和可滴定酸最佳含量共同决定最佳口感等实质性的技术效果。
本发明的第二目的是采用以下技术方案来实现的:
首先,芒果干选用临沧市永德县种植的椰香、马切苏、缅三品种中的一种或几种为初始原料;于七至九成熟时采摘鲜芒果,采摘的鲜芒果总糖含量为13%~15%;芒果干总糖含量为45%~57%、可滴定酸含量为0.9%~1.2%、可溶性固形物含量为55%~66%。
其次,芒果干总糖含量优选为47%~56%,进一步优选为48%~55%;可滴定酸含量优选为0.98%~1.17%,进一步优选为1.0%~
1.15%;可溶性固形物含量优选为56%~63%,进一步优选为58%~62%。
最后,通过对芒果种源的优化筛选,以及对芒果干总糖、可滴定酸以及可溶性固形物含量的质量控制,达到了原芒果营养成分最大限度转化和保留,总糖和可滴定酸最佳含量共同决定最佳口感等实质性的技术效果。
具体实施方式
下面通过具体实施例对本发明作进一步说明,但不以任何方式对本发明限制,基于本发明教导所作的任何变化或替换,均属本发明保护范围。
实施例1:初始原料的准备
采摘临沧市永德县八成熟的椰香芒果,此时芒果呈绿色。经检测:糖分含量为14%。
实施例2:特定原料I的制备
取实施例1准备的初始原料放入50℃的热水中浸泡3min后取出,将取出的芒果放于20℃的室内保温孵育2天,放置方式为:每层芒果上下各放置一层稻草和桔梗。选出颜色为橙黄色的芒果,用800Gy60CO-γ射线进行辐照。经检测:糖分含量为18%。
实施例3:特定原料II的制备
取实施例1准备的初始原料放入54℃的热水中浸泡5min后取出,将取出的芒果放于27℃的室内保温孵育2天,放置方式为:每层芒果上下各放置一层稻草和大米。选出颜色为橙黄色的芒果,用400Gy60CO-γ射线进行辐照。经检测:糖分含量为19%。
实施例4:特定原料III的制备
取实施例1准备的初始原料放入60℃的热水中浸泡10min后取出,将取出的芒果放于34℃室内保温孵育2天,放置方式为:每层芒果上下各放置一层稻草、大米和桔梗。选出颜色为橙黄色的芒果,用400Gy137Cs-γ射线进行辐照。经检测:糖分含量为17%。
实施例5:芒果干I的制备
取实施例2的特定原料削皮厚度为1.5~2.5mm、切片厚度为3~5mm。将切好的芒果放入5H-3TQ1全自动烘干机中,一开始温度调节为55~65℃烘烤3~4h,后将温度调至50~55℃烘烤2h,每当烘箱内湿度达到80%时进行一次抽风,最后一次抽风后,湿度为40%时恒温65℃烘烤3~4h出锅(烘烤时每小时进行一次轮转)。烘干结束后将不平整的芒果干压平,即得。经检测:糖分含量为45%,水分含量为16%。
实施例6:芒果干II的制备
取实施例3的特定原料削皮厚度为1.5~2.5mm、切片厚度为3.8~4.5mm。按实施例5的方法制备,即得。经检测:糖分含量为55%,水分含量为15%。
实施例7:芒果干III的制备
取实施例4的特定原料削皮厚度为1.5~2.5mm、切片厚度为3.5~4.8mm。按实施例5的方法制备,即得。经检测:糖分含量为43%,水分含量为16%。
为了对本发明作进一步的说明,同步进行总糖、可滴定酸、可溶性固形物的测定,并对其感官进行比较。具体如下:
样品①为本发明实施例1准备的初始原料;样品②为本发明实施例3制备得到的特定原料。样品③为本发明实施例6制备得到的芒果干。
1.营养成分转化和保留的比较
试验方法:随机选取样品①、样品②各10个芒果,选取同一批次烘烤箱中烘烤的样品③10袋,每袋110g。对样品进行营养成分的测定。结果见表1。
测定方法:采用折射仪法。
分组 | 可溶性固形物(%) |
样品① | 16.122±0.031 |
样品② | 23.785±0.033 |
样品③ | 58.237±0.033 |
由表1可看出:样品①与样品②营养成分含量有明显差异(p<0.01)。样品③(即本发明所述芒果干)的可溶性固形物含量约为58%。即本发明所述芒果干营养成分得到了最大限度的转化和保留。
2.总糖和可滴定酸的测定
试验方法:随机选取样品①、样品②各10个芒果,选取同一批次烘烤箱中烘烤的样品③10袋,每袋110g。对样品进行总糖和可滴定酸的测定。结果见表2。
测定方法:总糖的测定采用斐林氏容量法,有机酸采用指示剂法。
表2:总糖和可滴定酸的测定
分组 | 总糖(g/100g) | 可滴定酸(g/100g) |
样品① | 14.318±0.079 | 1.689±0.039 |
样品② | 19.639±0.053 | 0.702±0.033 |
样品③ | 55.615±0.081 | 1.103±0.028 |
由表2看出:样品①与样品②总糖和可滴定酸含量有显著差异(p<0.05)。样品②总糖明显升高、可滴定酸明显降低,通过本技术方案处理,得到高糖低酸用于芒果干加工的特定原料。样品③(即本发明所述芒果干)总糖、可滴定酸明显升高,为高糖高酸的芒果制品。总糖和可滴定酸含量变化共同决定了本发明芒果干最佳口感。
3.感官的比较
试验方法:随机选取样品①、样品②各10个芒果,选取同一批次烘烤箱中烘烤的样品③10袋,每袋110g。对样品进行感官的比较。结果见表3。
表3:感官品质的比较
分组 | 感官比较 |
样品① | 青色,较硬,有果实的清香,味道较涩难以下咽 |
样品② | 橙黄色,略硬,清香可口,味甜 |
样品③ | 金黄色,清香可口,肉质细腻,软硬、口感适中,甘甜 |
由表3看出:样品②经过本技术的处理后颜色、清香味、口感都有了显著的改善,样品③(即本发明所述芒果干)仍保留原芒果特有滋味,清香可口,甜味、软硬适中,肉质细腻。
Claims (3)
1.一种芒果干的加工方法,其特征在于:选用临沧市永德县种植的椰香、台农、红象牙品种中的一种或几种,于七至九成熟时采摘总糖含量为13%~15%的鲜芒果为初始原料;经浸泡、孵育、辐照制得芒果干加工用特定原料;特定原料经削皮、切片、脱水制得芒果干;所述芒果干加工工艺和质量参数为:
(1)特定原料制备:浸泡选用50~60℃热水、时间为3~10min;孵育选用稻草、大米、桔梗中的一种或几种为介质,20~34℃保温孵育2天;辐照选用60Co产生的γ射线、137Cs产生的γ射线中的一种,采用60Co或137Cs时剂量为300~1000Gy;
(2)芒果干制备:削皮厚度为1.5~2.5mm、切片厚度为3~5mm;脱水后芒果干水分含量为15%~20%、总糖含量为45%~57%、可滴定酸含量为0.9%~1.2%、可溶性固形物含量为55%~66%。
2.根据权利要求1所述加工方法,其特征在于:特定原料制备浸泡温度为53~58℃、时间为3~8min,孵育温度为22~32℃,辐照采用60Co或137Cs时剂量为350~850Gy;芒果干制备切片厚度为3.5~4.8mm,脱水后芒果干水分含量为15%~18%、总糖含量为47%~56%、可滴定酸含量为0.98%~1.17%、可溶性固形物含量为56%~63%。
3.根据权利要求1所述加工方法,其特征在于:特定原料制备浸泡温度为54~57℃,时间为4~6min,孵育温度为24~28℃,辐照采用60Co或137Cs时剂量为400~550Gy;芒果干制备切片厚度为3.8~4.5mm,脱水后芒果干水分含量为16%~17%、总糖含量为48%~55%;可滴定酸含量为1.0%~1.15%;可溶性固形物含量为58%~62%。
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