共查询到18条相似文献,搜索用时 171 毫秒
1.
2.
3.
油菜籽脱皮、低温压榨、膨化浸出制油新工艺 总被引:8,自引:5,他引:8
报道了一种油菜籽脱皮、低温压榨、膨化浸出制油新工艺.油菜籽用YTPG100型油菜籽脱皮机脱皮,其脱皮率高达96%以上,仁皮分离后,含皮仅2%的菜籽仁再经过LYZX·24型低温螺旋榨油机在常温至65℃压榨制得低温压榨菜籽油.低温压榨菜籽油经沉淀和过滤后即得成品油,其质量接近菜籽油一级国家标准(GB 1536-1986).低温压榨饼经YPH·20型挤压膨化机组织化处理,形成多微孔颗粒膨化料,经溶剂浸出制得残油率1%左右、蛋白质含量46%以上(干基)的菜籽粕. 相似文献
4.
侧限单面渗流冷榨下的菜籽应力应变关系反演 总被引:1,自引:0,他引:1
进行了单面渗流下菜籽及脱皮菜籽冷榨的应力、应变试验 ,研究了不同加载速率对应力、应变关系的影响 ,采用川北方程建立菜籽及脱皮菜籽的侧限单面排油压榨的应力、应变关系 ,运用改进模拟退火算法反求应力、应变关系参数。结果表明 :在相同压榨应力时 ,单面渗流下的应变小于双面渗流下的应变 ;加载速率对其应力、应变关系的影响均较大 ,应变随加载速率的减小而增加 ;脱皮菜籽的应变大于未脱皮菜籽的应变 ;川北方程能较好地模拟菜籽及其脱皮菜籽的侧限单面排油压榨的应力、应变关系。 相似文献
5.
侧限单面渗流冷榨下的菜籽应力应变关系反演 总被引:1,自引:0,他引:1
进行了单面渗流下菜籽及脱皮菜籽冷榨的应力、应变试验,研究了不同加载速率对应力、应变关系的影响,采用川北方程建立菜籽及脱皮菜籽的侧限单面排油压榨的应力、应变关系。运用改进模拟退火算法反求应力、应变关系参数。结果表明:在相同压榨应力时,单面渗流下的应变小于双面渗流下的应变;加载速率对其应力、应变关系的影响均较大,应变随加载速率的减小而增加;脱皮菜籽的应变大于未脱皮菜籽的应变;川北方程能较好地模拟菜籽及其脱皮菜籽的侧限单面排油压榨的应力、应变关系。 相似文献
6.
油菜籽的现代加工技术 总被引:1,自引:0,他引:1
结合传统的油菜籽加工工艺 ,介绍了许多最近开发的新技术及其应用前景 ,如油菜籽的脱皮技术、微波与红外加热灭酶技术、挤压膨化取油和脱皮冷榨制油技术、水酶法提取菜籽油、菜籽蛋白粉和菜籽蜜的工艺、TOP全脱胶工艺以及通过连续离心吸附法从大量的溶液中除去少量杂质的中心吸附技术等。 相似文献
7.
使用液压冷榨法制取的茶油品质好,但出油率较低。为提高液压冷榨的出油率,该试验以油茶籽液压饼为原料,采用液压冷榨法对其进行二次压榨,并对液压冷榨工艺进行研究。通过单因素试验着重探讨蒸制时间、保压时间、粒径等因素对油茶饼残油率的影响,并使用正交试验以确定最佳液压冷榨工艺条件。结果表明,二次压榨所得茶油在品质上与油茶籽直接压榨所制油相同,蒸制再压榨处理具有安全性;液压冷榨法提取油茶饼残油的最佳压榨工艺条件为最蒸制时间为60 min,保压时间120 min,粒径4 mm,在此条件下进行验证实验,油茶饼残油率为4.07%,使油茶籽仁的压榨出油率从80%左右提高到90%以上。 相似文献
8.
结合传统的油菜籽加工工艺,介绍了许多最近开发的新技术及其应用前景,如油菜籽的脱皮技术、微波与红外加热灭酶技术、挤压膨化取油和脱皮冷榨制油技术、水酶法提取菜籽油、菜籽蛋白粉和菜籽蜜的工艺、TOP全脱胶工艺以及通过连续离心吸附法从大量的溶液中除去少量杂质的中心吸附技术等。 相似文献
9.
10.
11.
12.
13.
Effect of pretreatment with microwaves on oxidative stability and nutraceuticals content of oil from rapeseed 总被引:4,自引:0,他引:4
Sodeif Azadmard-Damirchi Fatemeh Habibi-Nodeh Javad Hesari Mahbob Nemati Bahram Fathi Achachlouei 《Food chemistry》2010
Demand for oil extracted by cold press, such as rapeseed oil, is increasing, but oil extraction yield, and nutraceuticals content are lower for cold pressed oil, compared with oil extracted by solvent. In this study, rapeseed was treated with microwaves, to investigate the possibility of enhancing oil extraction yield, oxidative stability and nutraceuticals content. Rapeseed was pretreated with microwaves for two different times (2 min and 4 min) and oil was then extracted with a press. To compare the results, oil was also extracted from untreated rapeseed by solvent and press. Results showed that solvent-extracted oil had the highest phytosterol content. Microwave pretreatment of rapeseed can increase the oil extraction yield (by 10%), phytosterols (by 15%) and tocopherols (by 55%) of the oil extracted by press. Oil extracted from untreated rapeseed by press had the lowest oxidative stability (1 h); this was increased to 8 h by pretreatment of rapeseed with microwaves. Therefore, from the obtained results, it is advisable to treat rapeseed with microwaves before extraction by oil press, because it gives a relatively good recovery of oil, with a high amount of nutraceuticals, and can produce oil with a longer shelf life and enhanced value. 相似文献
14.
蓖麻籽是一种重要的高含油、低含水工业油料。采用螺旋压榨法制油时,其操作温度直接关系到油品质量和制油效果。蓖麻籽经过螺旋压榨后,其主要内含物蓖麻油以液态形式聚集并在压力的作用下从蓖麻籽中分离出来,这个过程主要受内外两方面因素的影响。蓖麻籽组成、入料形态和是否进行升温调质等多种因素直接决定了蓖麻籽螺旋压榨的效果;螺旋榨油机的榨轴转速和出饼口孔径直接制约了油料输送速率和出油效果。通过多工况下的组合试验及均值化处理,得到了单螺旋榨油机的实际输送速率和当量摩擦系数等参数。蓖麻籽直接进料压榨,在榨轴平均转速为50.25 r/min、出饼口孔径5 mm时,平均压缩比为4.28、输送效率为4.41 kg/h、饼残油率14.86%。 相似文献
15.
微波预处理油菜籽可显著提高压榨出油率,但压榨后的饼粕中仍残留油脂,可采用浸出法提取饼中残油。为比较压榨油和浸出油的主要理化品质,在2450MHz、800W的微波条件下,分别对油菜籽预处理0~7min,冷却至室温后压榨制油,继而对饼粕中残油用正己烷萃取。结果表明,微波处理时间、压榨和浸出的制油方式对菜籽油酸价、过氧化值、p-茴香胺值、水分含量均有显著影响(P〈0.05)。压榨油和浸出油的酸价、p-茴香胺值随微波时间的延长而增加,过氧化值呈先增加后减少的趋势,浸出油酸价、过氧化值和p-茴香胺值高于压榨油。压榨油水分含量随微波时间的延长而增加,而浸出油的则减少,压榨油水分含量高于浸出油。压榨油和浸出油的色泽(罗维朋比色)随微波时间的延长逐渐变深,浸出油色泽更深;加热试验(至280℃)中压榨油无析出物,而浸出油产生絮状析出物。由此可见基于微波预处理油菜籽的压榨油仅需水洗、过滤或离心分离即可满足国家标准,浸出油则需要进行脱胶、脱酸、脱色等精炼处理。 相似文献
16.
17.
Marko Jukić Jasmina Lukinac Jaka Čuljak Mateja Pavlović Drago Šubarić Daliborka Koceva Komlenić 《International Journal of Food Science & Technology》2019,54(3):602-609
Pumpkin seed oil press cake (PSOPC) is a by-product of pumpkin oil production, and after cold pressing, a significant amount of oil still remains in the press cake. The aim of this study was to investigate the possible use of PSOPC flour as a substitute for wheat flour in biscuit production and, consequently, for reducing shortening usage. Biscuits have been produced from composite blends of plain white flour and PSOPC flour in ratios 100:0, 80:20, 60:40 and 40:60, respectively. Shortening addition was gradually reduced depending on the PSOPC flour addition. Biscuit baking quality was determined by width, thickness, spread factor, volume and textural properties. Computer vision was used to evaluate biscuit colour, and sensory evaluation was conducted for colour, taste, texture and overall acceptance. Results showed that PSOPC flour decreased biscuit diameter, height and volume and also caused a softer texture of biscuit. PSOPC flour contributed to the greenish colour of biscuits and the pleasant taste of roasted pumpkin seed. PSOPC flour can be successfully used as a functional and nutritionally valuable substitute for wheat flour and shortening, even in quantities up to 60%, without significant deterioration of the technological quality of biscuits. 相似文献