破损淀粉对面条蒸煮品质的影响研究

研究破损淀粉值对面条蒸煮品质的影响规律,实验结果表明:随着破损淀粉值的增加,面条的品质有所劣变;干物质损失率和蛋白质损失率与破损淀粉值呈高度显著正相关,面条吸水率与破损淀粉值相关系达不到显著水平。     

羧甲基纤维素钠对酸性乳饮料稳定作用的研究

通过测定添加不同含量的羧甲基纤维素钠(CMC)对酸性乳饮料的沉淀率、粘度、粒径分布、水分子流动性及Zeta电位的影响,研究了CMC对酸性乳饮料的稳定作用。结果表明,CMC对酸性乳饮料的稳定作用表现为使产品的沉淀率降低,粘度升高,在微观性质上表现为使产品的粒径减小,水分流动性减弱,Zeta电位的绝对值升高。     

The effects of microbial transglutaminase,sodium stearoyl lactylate and water on the quality of instant fried noodles

Instant fried noodles are typically made from flour of medium protein content. In order to examine the potential application of microbial transglutaminase (MTGase), a low-protein soft wheat flour (Australian Soft) has been used. Trials were carried out to evaluate the effects of varying proportions of three ingredients (MTGase, sodium stearoyl lactylate (SSL) and water) on product texture and colour of instant noodles. The variables were studied using a central composite design. Textural characteristics were assessed using the TA-TX2, colour by the Minolta Chroma meter and the results analysed by response surface methodology. MTGase and SSL enhanced the textural properties of noodles prepared with the low-protein flour and electron microscopy confirmed the enhanced development of structure within the noodles. No significant observable difference was found in noodle colour between the various treatment combinations. MTGase and water had an impact on fat uptake with an inverse relationship between water incorporation and uptake.     

谷朊粉对马铃薯热干面品质的影响

为提高马铃薯热干面的品质和稳定性,该文在分析谷朊粉基本成分与物化特性的基础上,深入研究了谷朊粉添加量对混合粉特性及对生鲜及熟制马铃薯热干面蒸煮、质构、贮藏等品质特性的影响.结果表明,随着混合粉中谷朊粉含量升高,其持水性下降,吸水膨胀性上升.随着谷朊粉添加量的增加,马铃薯热干面吸水性呈下降趋势、蒸煮损失率呈先上升后下降变...     

Pea starch noodles: Effect of processing variables on characteristics and optimisation of twin-screw extrusion process

The effects of processing variables (moisture content, barrel temperature and screw speed) on the physicochemical, cooking and textural properties of pea starch noodles prepared by twin-screw extrusion were investigated using response surface methodology. Results indicated that increasing dough moisture content increased the b^∗ value (yellowness), expansion ratio, percentage of gelatinised starch, resistant starch content, cooking time, firmness and surface stickiness, but reduced cooking loss. Raising barrel temperature reduced cooking loss and cooked weight, but increased the expansion ratio, percentage of gelatinised starch, resistant starch, firmness and surface stickiness of cooked pea starch noodles. The b^∗ value, expansion ratio, percentage of gelatinised starch, resistant starch, cooking time, firmness and surface stickiness were increased as screw speed was increased, whereas the a^∗ value and cooked weight were reduced. The optimum processing conditions for pea starch noodle-making by twin-screw extrusion was established. Good agreement was noted between experimental values obtained at optimum process conditions and predicted values. Pea starch noodles prepared by twin-screw extrusion exhibited similar brightness in colour and cooking time to, but firmer texture than, commercial mung bean starch noodles.     

交联—羧甲基淀粉糊性质研究

研究制备交联-羧甲基（CCMS）复合变性淀粉,并分析了其性质,包括糊透明度、抗酸碱能力、抗老化能力、抗剪切能力以及温度和时间对糊黏度影响。结果表明：经过复合变性的交联一羧甲基淀粉（CcMS）既保存了单一变性淀粉羧甲基淀粉（CMS）和交联淀粉（CS）的优点,又弥补了羧甲基淀粉（CMS）和交联淀粉（CS）各自的不足。     

Effect of blending durum wheat flour with hard white wheat flour on the quality of yellow alkaline noodles

Yellow alkaline noodles (YAN) were prepared from durum and hard white wheat flour blends and evaluated for noodle color, appearance and cooked noodle texture. Raw noodle brightness, L^∗, and yellowness, b^∗, improved significantly with durum flour addition while significant increases in a^∗ values were observed at both 2 h and 24 h. The very low noodle speck count of white wheat noodles remained constant over the 24 h period at any durum flour addition. Noodle bite, MCS, decreased with the addition of durum flour, resistance to compression (RTC) remained equivalent to the hard white flour control while an associated improvement in cooked noodle recovery (REC) was observed. The study indicates that addition of durum flour at even the 25% level, offers a viable product with improved colour characteristics, consistent RTC and improved REC textural attributes. Uniaxial stress relaxation parameters of cooked noodles significantly correlated with the empirical texture measurements.     

不同熟制干制方法对方便面品质的影响

研究了水煮和蒸煮的熟制方法对方便面品质的影响,以及熟制后采用不同的干燥方法对面条进行脱水,选出一种最优的熟制干制方法.结果表明蒸煮方法较优于水煮,微波干燥优于热风、远红外和油炸干燥方法.通过正交实验得出微波干燥的最佳工艺条件为:微波干燥处理时间40s、微波功率210kW、微波频率920MHz和传道速率1m/min综合得分最高.     

Effect of superheated steam prefrying treatment on the quality of potato chips

Superheated steam drying (SSD) was used as a prefrying treatment prior to deep‐fat frying for potato slices. The effect of SSD at 130, 150 or 180 °C and steam velocity of 2.0 m s^?1 on the fat uptake, colour and texture of fried potato chips was evaluated; microstructure and degree of starch gelatinization were also evaluated to help explain the fat uptake results. SSD and frying yielded potato chips with the fat content from 0.263 ± 0.002 to 0.304 ± 0.002 kg kg^?1 (d.b.), while frying without SSD led to chips with the fat content as high as 0.359 ± 0.003 kg kg^?1 (d.b.). SSD did not promote starch gelatinization. Lower fat uptake was correlated to modified surface structure and lower moisture content of potato slices prior to frying. Frying with/without SSD pretreatment yielded potato chips of similar hardness, crispness and lightness. On the other hand, SSD significantly increased redness and yellowness of the fried chips.     

Storage conditions affect quality of noodles with added soy flour and sweet potato

Summary Noodles were prepared from a formulation in which a portion of the flour was replaced with 10% defatted soy flour and sweet potato as 10% flour or 15% puree. Dried noodles were packaged in plastic bags under partial vacuum or air and stored at 4.4 °C or 22–30 °C for 6 months. Colour, β-carotene and sensory characteristics were analyzed at 2-month intervals. Packaging atmosphere had minor effects on colour. Stored noodles became lighter and yellower, and β-carotene decreased, with all changes being greater at 22–30 °C. Storage conditions influenced acceptability scores minimally. Noodles were stored successfully under air with greater quality retention with 4.4 °C storage.     

Contribution of starch and non-starch parameters to the eating quality of japanese white salted noodles

Viscograph paste viscosity parameters of starches isolated from 42 wheat varieties were highly correlated with each other and with measures of the quality of the derived Japanese white salted noodles. Better correlations with noodle quality were obtained when measurements of wheat protein and grain hardness (PSI) as well as a starch viscosity parameter were included in the regression equations.     

杀菌对保鲜方便米粉品质的影响

通过实验比较了几种杀菌保鲜方法对保鲜方便米粉品质的影响,得出最佳热力杀菌参数,可以在不加任何人工合成防腐剂的条件下,使保鲜方便米粉保存1年且对口感等品质影响较小。     

羧甲基纤维素钠稳定酸性乳饮料的研究进展

提高乳饮料产品稳定性以延长货架期是乳品开发的重要研究内容。综述了酸性乳饮料的稳定性表征方法及其稳定/失稳机理,重点介绍了羧甲基纤维素钠(CMC)对酸性乳饮料的稳定效果和影响因素。     

方便面酱料生产和质量管控

方便面调味料中酱料对方便面风味尤其是特征风味的影响很大,控制好酱料的质量是保证方便面风味稳定的重要一环.采取一些措施对原料检验分级,对酱料炒制的温度、时间、火候进行标准化操作等,可最大限度地保持酱料质量的稳定性.     

无明矾马铃薯粉丝制作工艺及其性能的研究

以β-葡聚糖、CaCl2、KCl、葡萄糖酸内酯(GDL)的混合凝固剂来替代明矾测定粉丝的断条率和糊汤情况,通过正交试验得出最佳配方比为:β-葡聚糖、CaCl2、KCL、GDL质量分数为0.16%,0.14%,1.8%,1.2%,熟化时间5 min,温度为92℃,这种复合凝胶剂改善了马铃薯粉丝的感官、断条率、烹煮损失率等...     

可食性羧甲基纤维素膜制备及性能研究

该试验主要以羧甲基纤维素(CMC)为膜原料,研究影响膜性能的各种因素,并通过正交试验确定制备CMC可食性膜最佳工艺参数;最后通过验证试验得出制备可食性羧甲基纤维素膜最佳工艺条件为:CMC浓度为2%,甘油添加量为30%,倒膜量为11 g,烘烤温度为50℃;在此条件下制得膜综合评分为87.18分。     

方便面感官鉴评的探讨

文章结合新的方便面感官鉴评国家标准,主要探讨了方便面面饼、调味料的感官鉴评方法及指标。     

马铃薯羟丙基淀粉的制备及理化特性研究

研究了用环氧丙烷制备马铃薯羟丙基淀粉的反应条件及羟丙基化对马铃薯淀粉糊特性的影响.在反应条件中,着重研究了 Na2SO4用量、环氧丙烷用量、反应温度和反应时间对分子取代度的影响规律.实验表明:羟丙基化能大大提高马铃薯淀粉糊的透明度、膨胀度和冻融稳定性,适度降低了糊化温度.     

甘薯淀粉性质的研究

研究了甘薯淀粉的理化性质,结果表明:其颗粒粒径的平均值为5~31mm,结晶结构属C型,直链淀粉含量18.5%,糊化温度为60.8~78.5℃。甘薯淀粉的透明度为42%,凝胶强度为98g。