共查询到19条相似文献,搜索用时 256 毫秒
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沙棘发酵酒的澄清与稳定工艺研究 总被引:1,自引:0,他引:1
为保证沙棘发酵酒货架期的澄清与稳定,采用壳聚糖50g/100L与硅藻土100g/100L组合时,经2~3h澄清后,效果最佳;冷冻处理的最佳温度为-4℃,时间为5d;热处理的温度为34℃、时间为7d时表现最佳,其能量消耗小,成本较低,对果香与酒体的新鲜感影响较小。732钠型树脂可除去钾等离子引起的混浊与沉淀,表现处理时间短,但不能解决金属性混浊。单一处理难以达到理想的澄清稳定效果,需配以其它措施。 相似文献
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为解决百香果果酒存储期间出现浑浊现象的问题,本文为陈酿百香果酒为原料,以透光率和感官评分作为澄清效果的评价指标,对比了自然澄清法、离心法、活性白土澄清法、果胶酶澄清法、壳聚糖澄清法和膜过滤法等6种澄清方法对百香果果酒的澄清效果,并对澄清剂的最适添加量进行了探究。结果表明,6种澄清方法的澄清效果为:活性白土澄清法>果胶酶澄清法>膜过滤法>壳聚糖澄清法>离心法>自然澄清法。膜过滤法、离心法、果胶酶澄清法和壳聚糖澄清法处理百香果果酒后,口感与色泽发生了明显变化。活性白土澄清法能较好地对百香果果酒进行澄清,且保持百香果果酒原有的品质,其最适添加量为9%。经过澄清处理后百香果果酒呈金黄色,澄清透明,口感良好,且在保质期内均未再出现浑浊现象。 相似文献
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低度姜酒在生产销售过程中,易出现失光、浑浊等现象,通过分析姜酒非生物浑浊的类型与沉淀的成因、参与物质和影响因素,提出了通过加工工艺、过滤澄清工艺解决浑浊与沉淀的方法.希望为酿酒企业解决低度姜酒浑浊的问题提供参考. 相似文献
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黄酒的非生物性混浊及预防 总被引:2,自引:0,他引:2
黄酒是我国的国粹,酒香浓郁,口味独特,营养丰富。黄酒的非生物性混浊主要包括热混浊、冷混浊、氧化混浊等,缘于黄酒中的不稳定性物质如蛋白质、多糖、多酚、单宁、铁、铜等由于温度变化、溶氧等引起。预防措施有:降低原料中蛋白质及多酚含量;使用适宜硬度的酿造用水、高质量的焦糖色素,合理使用麦曲和药曲;加强生产过程中储酒、过滤设备及成品酒储运管理;严格控制发酵及煎酒时间和温度;提高黄酒勾兑水平;采用啤酒等其他酒类处理新技术;添加澄清剂.加强黄酒的澄清速度和程度;防止氧化作用。(孙悟) 相似文献
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以制备的小麦澄清蛋白处理樱桃酒,通过测定澄清前、后理化性质和稳定性的变化来分析小麦澄清蛋白对 樱桃酒的澄清效果。结果表明:用50 mg/L的小麦澄清蛋白处理樱桃酒后,其浊度与澄清前相比降低了71.64%;总 酚质量浓度和黄酮质量浓度与澄清前相比差异不显著(P>0.05);酒精体积分数、pH值、色价值、花色苷质量浓 度、总糖质量分数和总酸质量浓度与澄清前相比变化不大。与明胶、聚乙烯吡咯烷酮、羧甲基纤维素钠相比,经 小麦澄清蛋白处理的樱桃酒先于其他3 种澄清剂在139 h时达到最低浊度2.07 NTU并保持不变。用明胶作澄清剂, 樱桃酒中总酚减少量最多,减少35.37 mg/L;用聚乙烯吡咯烷酮作澄清剂,色价值降低最高,降低0.30;用羧甲基 纤维素钠作澄清剂,花色苷减少量最多,减少0.49 mg/L。小麦澄清蛋白处理樱桃酒的最佳条件为:小麦蛋白用量 50 mg/L、搅拌速率800 r/min、搅拌时间120 min。小麦澄清蛋白具有澄清效果好、澄清速率快、安全无毒、成本低 等优点,对樱桃酒的工业生产和延长货架期具有重要意义。 相似文献
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青稞酒是由青稞加酒曲酿制而成的.青稞酒有工厂化生产,其生产方式不同于民间传统方式.民间传统酿造的青稞酒近似于米酒,在夏天极易变酸,保质期很短.原因可能由于酿造过程中的微生物进入新酿的青稞酒中继续生长,其产生的酶继续进行酶促反应;或者在存贮过程中,空气中的微生物进入酒内繁殖,使酒变酸变质.该研究对青稞酒的变质过程进行分析,并利用巴氏消毒法杀灭青稞酒中的微生物,从而增加青稞酒的保质期. 相似文献
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酸性蛋白酶在机制粳米黄酒中的应用 总被引:5,自引:0,他引:5
酸性蛋白酶在粳米黄酒酿造中可为酵母菌的生长繁殖提供氮源,促进酵母菌的快速繁殖,提高发酵过程的稳定性和能力;分解原料中的蛋白质物质,促进对原料淀粉的利用,提高原料的出酒率;可有效解决机制粳米黄酒过程普遍存在的低氨基酸态氮、低非糖固形物的问题;酸性蛋白酶在发酵酒醅中的澄清作用,为黄酒成品解决非生物浑浊提供了方法.(孙悟) 相似文献
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BRAHIM HAYOGLU OSMAN KOLA CEMAL KAYA SERTAC ÖZER HÜSEYIN TURKOGLU 《Journal of Food Processing and Preservation》2009,33(S1):252-263
Verjuice is an unfermented green grape juice obtained by pressing green grapes. It has a unique flavor and sour taste. In the present study, parameters on the quality properties of verjuice made from Kabarcık and Yediveren grape varieties were studied; turbidity of fresh verjuice samples were 57.3 and 59.57 (625 nm %T), respectively. Phenolic matter contents ranged between 626.27 and 753.80 (mg/100 mL). In the samples treated with heat, clarified with gelatin and stored at 4C, the turbidity values were 81.20 and 93.10 (625 %T), and the total phenolic matter contents were 270.21 and 227.48 mg/100 mL in Kabarcık and Yediveren varieties, respectively. In addition, according to sensory evaluation, verjuice samples clarified with gelatin were preferred most by the panelists.
Verjuice is an unfermented green grape juice obtained by pressing unripe grapes with a unique flavor and sour taste. It is traditionally produced by pressing grapes and sieving the juice obtained through a nonmetal. It is preserved in bottles, adding olive oil to prevent contact with air, at cool condition. It is consumed locally, especially in the Mediterranean and southeastern regions of Turkey, to enhance the flavor of traditional meals, salads and appetizers, and as an ingredient in the production of various drinks, and several sausages such as mustard sausage. The natural verjuice that is neither clarified nor heated was more flavored, but it is turbid and has rather short shelf life. The present study revealed that clarification with gelatin followed by heat treatment of bottled verjuice at 85C for 15 min result in a favorable product with respect to quality properties during shelf life at ambient temperature. 相似文献
PRACTICAL APPLICATIONS
Verjuice is an unfermented green grape juice obtained by pressing unripe grapes with a unique flavor and sour taste. It is traditionally produced by pressing grapes and sieving the juice obtained through a nonmetal. It is preserved in bottles, adding olive oil to prevent contact with air, at cool condition. It is consumed locally, especially in the Mediterranean and southeastern regions of Turkey, to enhance the flavor of traditional meals, salads and appetizers, and as an ingredient in the production of various drinks, and several sausages such as mustard sausage. The natural verjuice that is neither clarified nor heated was more flavored, but it is turbid and has rather short shelf life. The present study revealed that clarification with gelatin followed by heat treatment of bottled verjuice at 85C for 15 min result in a favorable product with respect to quality properties during shelf life at ambient temperature. 相似文献