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以糯米、太子参为原料,发酵酿制甜酒酿。采用单因素和正交试验确定甜酒酿的发酵工艺参数,并研究发酵过程中的总糖、总酸、pH值和酒精度的变化规律。结果表明,最佳发酵工艺参数组合为发酵时间4 d,发酵温度28 ℃,接种量1.5%,太子参添加量2%。此条件下发酵的甜酒酿口感最佳,酒液澄清,呈米黄色。甜酒酿中的总糖随时间的推移先上升后下降,总酸在发酵初期先上升后基本稳定,pH值先是下降后基本稳定,酒精度呈上升趋势。 相似文献
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新型糯玉米保健醋的工艺研究 总被引:1,自引:0,他引:1
以香白糯玉米为原料,采用固态发酵工艺,通过正交试验确定糯玉米醋的最佳工艺条件:在温度33℃、糖度为18°和pH为4.4,进行酒精发酵3d;酒精发酵结束后在酒精度9%,温度38℃,发酵酸度为1.4%时开始进入醋酸发酵,发酵4d,最后经调配灌装杀菌即可得营养丰富、具有糯玉米特征、澄清透明的糯玉米醋。 相似文献
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对彩色甜糯玉米甜酒酿罐装食品的发酵工艺和产品的内容物配比进行试验研究.以发酵温度为25℃、料液比为1:0.8进行发酵试验,考察不同甜酒曲用量、不同发酵时间的发酵效果.再以发酵后的甜酒醪进行调配试验,找出适宜的稀释比和加糖量.试验结果表明:在发酵温度为25℃、料液比为1:0.8的条件下,彩色甜糯玉米甜酒酿发酵时甜酒曲最佳用量为1.5%、发酵最佳时间为72h.彩色甜糯玉米甜酒酿罐装食品内容物最佳配比为:甜酒醪:水为1:2,加糖量9%.产品可溶性固形物为9.4%,酒精度≤1.50. 相似文献
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以新鲜红皮红肉的火龙果果实和糯米为原料,利用单因素试验分析,优化甜酒酿发酵工艺,探讨酵母用量、发酵温度、火龙果与甜酒酿添加量之比、发酵时间对火龙果米酒的影响,并以感官评分为评价因素,应用L9(34)正交试验设计方案和模糊数学评判确定出火龙果米酒的最佳工艺。结果表明,火龙果米酒最佳配方为酵母用量0.4%,发酵温度26℃,火龙果与甜酒酿添加量之比1∶3,发酵时间6 d。在此组合下,发酵的火龙果米酒综合感官品质最为理想,制得的产品色泽清亮,香气纯正,口感净爽,典型性好。本研究结果可为火龙果的深加工与开发提供理论依据和技术基础。 相似文献
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糯玉米保健醋饮料的研制 总被引:1,自引:0,他引:1
以糯玉米为原料,采用固态发酵工艺,通过正交试验确定糯玉米醋的最佳工艺条件:在温度32℃、糖度2%和pH 4.0~4.5下进行酒精发酵3~5d;酒精发酵结束后在酒精度6%、温度32℃、发酵酸度6g/100ml时开始进入醋酸发酵,发酵2~4d,最后经调配灌装杀菌,即可得营养丰富、具有糯玉米风味、澄清透明的糯玉米醋。最后用蜂蜜等调味,制成味道上等的保健醋饮料。 相似文献
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自然发酵糯玉米中细菌多样性分析及纯菌种对其加工特性的影响 总被引:1,自引:0,他引:1
目的:研究自然发酵糯玉米中细菌的菌群组成,以及其中乳酸菌对糯玉米粉加工特性的影响。方法:以地方特色的糯玉米为原料,采用MiSeq技术对自然发酵菌液中细菌16S rDNA的V3~V4区进行测序分析,获得自然发酵液中的细菌多样性。对其中的1 株优势菌株进行筛选鉴定,比较纯菌种发酵和自然发酵对糯玉米粉的糊化特性和质构特性的影响。结果:自然发酵液菌中乳杆菌(Lactobacillus)为优势菌,经形态学特征、生理生化特征及16S?rDNA基因序列分析鉴定其为发酵乳杆菌(Lactobacillus?fermentum)。经过纯种发酵后糯玉米粉的峰值黏度、衰减值和最终黏度显著提高,回生值显著降低;经过蒸制后硬度、黏附性、胶着性和咀嚼性显著增高从而改善糯玉米粉质特性。 相似文献
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Li Cui Da‐jing Li Chun‐quan Liu 《International Journal of Food Science & Technology》2012,47(4):755-760
The effects of fermentation on protein, in vitro protein digestibility (IVPD), amino acid, total phenolics, phytic acid and colour values of four maize cultivars (two bi‐colour waxy corn and two super sweet corn), namely Jing Tian Zi Hua Nuo NO. 2, Jing Tian NO. 3, Bright Jean and Su Ke Hua Nuo 2008, were determined and compared with those of their unfermented counterparts. Results showed that fermentation caused significant increase in protein (43.5% largest increase), most kind of amino acid (131.5% largest increase in lysine content) and total phenolic content (23.4% largest increase), but significant reduction in phytic acid content (24.3% largest reduction) of four maize cultivars. The IVPD of four maize cultivars, except Suke2008, did not change significantly. Colour values of two waxy corn were resulted in the increase in a‐values and reduction in L‐values. 相似文献
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Effect of barley and its amylopectin content on ruminal fermentation and nitrogen utilization in lactating dairy cows 总被引:1,自引:0,他引:1
Foley AE Hristov AN Melgar A Ropp JK Etter RP Zaman S Hunt CW Huber K Price WJ 《Journal of dairy science》2006,89(11):4321-4335
The effect of type of grain (corn vs. barley) and amylopectin content of barley grain (normal vs. waxy) on ruminal fermentation, digestibility, and utilization of ruminal ammonia nitrogen for milk protein synthesis was studied in a replicated 3 × 3 Latin square design trial with 6 lactating dairy cows. The experimental treatments were (proportion of dietary dry matter): CORN, 40% corn grain, NBAR, 30% normal Baronesse barley:10% corn grain, and WBAR, 30% high-amylopectin (waxy) Baronesse barley:10% corn grain. All grains were steam-rolled and fed as part of a total mixed ration. The NBAR and WBAR diets resulted in increased ruminal ammonia concentrations compared with CORN (8.2, 7.4, and 5.6 mM, respectively), but other ruminal fermentation parameters were not affected. Ruminal digestibility of dietary nutrients and microbial protein synthesis in the rumen were also not affected by diet. Corn grain had greater in situ effective ruminal dry matter degradability (62.8%) than the barley grains (58.2 and 50.7%, respectively), and degradability of the normal barley starch was greater than that of the waxy barley (69.3 and 58.9%, respectively). A greater percentage of relative starch crystallinity was observed for the waxy compared with the normal barley grain. Total tract apparent digestibility of dry matter and organic matter were decreased by WBAR compared with CORN and NBAR. Total tract starch digestibility was greater and milk urea nitrogen content was lower for CORN compared with the 2 barley diets. In this study, the extent of processing of the grain component of the diet was most likely the factor that determined the diet responses. Minimal processing of barley grain (processing indexes of 79.2 to 87.9%) reduced its total tract digestibility of starch compared with steam-rolled corn (processing index of 58.8%). As a result of the increased ammonia concentration and reduced degradability of barley dry matter in the rumen, the utilization of ruminal ammonia nitrogen for microbial protein synthesis was decreased with the barley diets compared with the corn-based diet. In this study, waxy Baronesse barley was less degradable in the rumen and the total digestive tract than its normal counterpart. The most likely reasons for these effects were the differences in starch characteristics and chemical composition, and perhaps the different response to processing between the 2 barleys. 相似文献
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以糯玉米淀粉为原料,以次氯酸钠为氧化剂,氢氧化钠为催化剂,对氧化糯玉米淀粉的制备及性能进行了研究.考察了反应时间、反应温度、次氯酸钠用量、pH对氧化糯玉米淀粉羧基含量的影响,采用酸碱滴定法测定氧化糯玉米淀粉羧基含量.试验结果表明,随着次氯酸钠用量增加,氧化糯玉米淀粉的羧基含量也随之增大;在一定时间范围内,氧化糯玉米淀粉的羧基含量随反应时间的增加而增加;反应温度和pH对氧化糯玉米羧基含量的影响呈倒抛物线趋势,存在最大值.糯玉米淀粉经氧化后,其液透明度和黏度热稳定性提高,但其冻融稳定性和凝沉性下降. 相似文献
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