共查询到19条相似文献,搜索用时 171 毫秒
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影响猪肉皮气膨化涨发的关键工艺因素研究 总被引:1,自引:0,他引:1
目的:通过对影响猪肉皮气膨化涨发的关键要素的研究,得出气膨化涨发干猪肉皮最佳工艺的涨发温度和时间.方法:先采用单因素分析法,通过色泽、组织状态、香味、弹性感官品质进行感官鉴定得出第1阶段不同烤制温度、第1阶段不同烤制时间、第2阶段不同烤制温度的工艺参数,再用正交试验法得出气膨化涨发猪肉皮的最佳值.结果:猪肉皮气膨化最佳涨发条件是:先上火90℃、下火100℃烤40min,后上、下火230℃的烤至完全膨化.其中,影响猪肉皮气膨化涨发的关键因素依次是第2阶段的烤制温度>第1阶段烤制温度>第1阶段烤制时间 相似文献
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红小豆挤压膨化产品的质量性状分析 总被引:3,自引:0,他引:3
目的:确定红小豆挤压膨化产品质量性状与工艺参数间关系,初步构建产品质量评价指标体系,为挤压膨化产品的开发利用、质量管理及标准制定提供依据。方法:通过回归旋转实验研究物料水分、螺杆转速和膨化温度对挤压产品质量性状(膨化率、吸水性指数、水溶性指数)的影响。采用相关性分析法研究各质量性状间的相关关系。结果:挤压工艺参数影响红小豆膨化产品质量性状的顺序为膨化温度>物料水分含量>螺杆转速,膨化温度和物料水分含量显著影响产品质量性状,螺杆转速影响不显著;挤压产品质量性状中,吸水性指数与水溶性指数呈极显著负相关。结论:红小豆挤压膨化工艺参数与产品质量性状间相关性显著,在应用中要根据所需的质量要求选择恰当的工艺参数。 相似文献
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变温压差膨化干燥香菇脆片的工艺优化 总被引:1,自引:0,他引:1
为研究变温压差膨化技术在菌菇类产品深加工中的可行性,开发一种新型的即食类香菇休闲产品-香菇脆片。以香菇为原料,在停滞时间、膨化压力差、膨化温度、抽空温度、抽空时间、切片厚度6个单因素试验基础上,采用响应面分析法建立多元统计回归模型,对变温压差膨化干燥香菇脆片进行工艺优化。研究表明,变温压差膨化干燥香菇脆片的最佳工艺参数为:停滞时间12 min、膨化压力差0.2 MPa、膨化温度90℃、抽空时间68 min、抽空温度80℃、切片厚度7 mm。在此最佳工艺条件下进行验证得到变温压差膨化干燥香菇脆片的脆度814.73±19.80 g,硬度1962.76±33.55 g,感官评分97.10±2.40,与预测值极为接近,说明采用此模型对气流膨化香菇脆片进行优化具有可行性。 相似文献
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响应面法优化番木瓜变温压差膨化干燥工艺 总被引:2,自引:0,他引:2
优化对番木瓜变温压差膨化干燥工艺,基于响应面的中心组合设计方法,分析预干燥时间、膨化温度、抽
空时间3 个因素对番木瓜膨化产品含水率、硬度、脆度、色泽和复水比5 个指标的影响。采用因子分析法确定5 个
指标的权重,通过综合评分得到番木瓜变温压差膨化干燥的最佳工艺参数范围。结果表明:预干燥时间、膨化温
度、抽空时间三因素对产品的含水率、硬度、脆度、色泽和复水比均有显著影响(P<0.05),且三因素交互作用
对产品品质影响显著;番木瓜变温压差膨化最优干燥参数为:预干燥时间4.96~6.00 h、膨化温度80.00~97.23 ℃、
抽空时间2.02~3.00 h。 相似文献
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为了确定香蕉变温压差膨化干燥最佳工艺条件,采用三因子二次回归正交旋转组合设计,分析膨化温度、膨化压力差和抽空温度3因素对产品L*值、脆度、硬度和含水率4个指标的影响及其交互作用。根据试验数据得到4个指标的二次回归模型,并进行了响应面分析,采用因子分析法确定4个评价指标的权重,通过综合评分得出了香蕉优化膨化工艺参数。结果表明:膨化温度、膨化压力差和抽空温度对产品的L*值、脆度、硬度和含水率影响显著,三因子间的交互作用不显著;最佳工艺范围是:膨化温度86-91℃;膨化压力差0.16-0.24MPa;抽空温度83-87℃。 相似文献
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Franklyn Zapana Johannes de Bruijn Leslie Vidal Pedro Melín María Eugenia González Gustavo Cabrera Pamela Williams Rodrigo Bórquez 《International Journal of Food Science & Technology》2020,55(1):313-322
Puffed quinoa can be used as ready-to-eat breakfast food or as an ingredient in snack formulations. In this study, puffed quinoa products with and without starch–chitosan coating were developed by gun, extrusion and microwave puffing at different process conditions (pressure, power, moisture content and energy consumption). Size, bulk density, colour, expansion index, water absorption and solubility, microstructure, mechanical and thermal properties, chemical composition and in vitro digestibility of organic matter and proteins of popped quinoa were assessed. Optimal process conditions for gun puffing were maximum 1.31 MPa after 780 s, 500 r.p.m. and 180 s for extrusion puffing and 1200 W for 60 s applying microwave puffing at 18–20% moisture contents. Gun and extrusion puffing yielded high-quality popped quinoa with a biological availability of organic matter between 84–88% and 79–90% for proteins. Extrusion and gun puffing are the most promising processes to prepare quinoa snacks. 相似文献
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This work is intended to develop an overall understanding of puffing of a starch-based snack in a home microwave oven, using primarily the microwave energy. Combination of experimental measurements was used, including dynamic mechanical thermal analysis, CT-Scan, SEM, image processing, and measurement of temperature, moisture content, and expansion ratio. Effects of various product and process parameters on puffing, including those of pretreatment to produce the half product, were studied. Experimental data showed that the physicochemical processes contributing to crust formation were gelatinization of starch, migration of soluble ingredients to the surface, and shrinkage at the surface. A thicker material was harder to puff due to its increased mechanical resistance. Higher microwave power, leading to higher rate of evaporation, increased expansion. Evolution of mechanical properties of the crust greatly affected the final shape of the puffed product. In overall understanding, critical determinants of a puffing process were attributed to three material factors (reduced surface permeability, optimal moisture content, and deformability) and two process factors (intense heat and higher internal pressure from evaporation). 相似文献
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以双螺杆挤压微膨化工艺开发的马铃薯方便粥为原料,采用气流膨化技术处理马铃薯方便粥,通过测定干基水分含量、水分有效扩散系数、活化能以及色泽、膨化度、孔隙率和复水时间等研究膨化温度和气流速率对马铃薯方便粥水分及品质特性的影响,并建立气流膨化过程中马铃薯方便粥水分变化的动力学模型。结果表明:膨化温度和气流速率对马铃薯方便粥的水分变化均有明显影响。Page模型水分比预测值与实测值的拟合度较高,可以较好地预测马铃薯方便粥气流膨化过程中不同膨化温度、气流速率条件下的水分变化。水分有效扩散系数随着膨化温度、气流速率的升高均增大,气流膨化过程中马铃薯方便粥的活化能为18.96 kJ/mol。膨化时间、膨化温度和气流速率对马铃薯方便粥的亮度L*值、黄蓝度b*值、膨化度、孔隙率和复水时间均有明显影响。由相关性分析可知,气流膨化过程中马铃薯方便粥各品质特性指标间存在极显著相关性(P<0.01)。本研究可为气流膨化过程中马铃薯方便粥水分实时监测及实现高品质气流膨化提供理论依据。 相似文献
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High-temperature short time (HTST) air puffing has been found to be very useful process for production of potato-soy ready-to-eat snack food as it ideally produced highly porous and light texture. The process parameters considered viz. puffing temperature (185-255 °C) and puffing time (20-60 s) with constant initial moisture content of 36.74% and air velocity of 3.99 m/s for potato-soy blend with varying soy flour content from 5% to 25% were investigated using response surface methodology with central composite rotatable design (CCRD). The optimum product in terms of maximum expansion ratio (3.69), minimum hardness (2754.3 g) and maximum overall acceptability (7.3) were obtained with 10.31% soy flour blend in potato flour at the process conditions of puffing temperature (230.06 °C) and puffing time (25.46 s). Microstructural changes were evaluated at different stages (with an interval of 5 s) of HTST puffing for product obtained with the optimum processing conditions. The maximum expanded porous structures with larger cracks and smaller pits were recorded in the SEM micrographs at 20 s of HTST air puffing. 相似文献