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The physicochemical and sensory characteristics of pork frankfurters containing different levels (10% to 30%) of bacterial cellulose (nata) were evaluated. Emulsion stability of the raw meat batter decreased with the addition of nata. For nata‐added treatments, increasing levels of nata in frankfurters resulted in decreased textural hardness and shear values. Sensory results indicated that N10 and N20 had significantly higher firmness scores than N30 and control. However, juiciness score did not differ for all treatments. Incorporation of nata at lower levels (10% to 20%) did not have detrimental effects on the physicochemical, textural, sensory, and microbiological properties of regular‐fat frankfurters. Addition of a higher level (30%) of nata essentially produced comparable sensory properties to the control, but lower levels of nata in frankfurters yielded higher sensory firmness and instrumental hardness values. Based on the composite results, manufacture of regular‐fat frankfurter containing 10% to 20% high‐fiber nata resulted in product quality comparable to the control. 相似文献
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该文主要研究了纳塔生产菌的发酵生产条件的优化.纳塔是醋酸菌发酵生产的细菌纤维素,作为一种健康天然食品,被广泛应用于罐头、果冻等食品中.以纳塔为代表的细菌纤维素近几年越来越受到人们的重视,成为国内生物材料研究的热点.试验从样品发酵液中筛选出了纳塔生产菌,得到了优化的纳塔发酵培养基组成为:葡萄糖2%,蛋白胨1%,酵母膏0.5%,柠檬酸0.1%,磷酸氢二钠0.5%,纳塔的产量达到了9.9g/L. 相似文献
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本实验的目的在于研究仙草提取物添加量对猪肉贡丸品质变化和抗氧化特性的影响。采用物理的方法测定了仙草贡丸质构特性和色泽,采用感官评定方法分析了贡丸的食用品质,并用化学的方法测定了4℃下储藏期间贡丸的硫代巴比妥酸反应物值(TBARS)和挥发性盐基氮(TVBN)变化情况。结果表明:随着仙草胶添加量的增加,贡丸的硬度、咀嚼性和弹性呈现先增加后降低趋势,色泽上L值、b值显著降低(P0.01),a值逐渐升高;与对照组相比,随着贮藏时间的增加,添加了仙草提取物的各处理组贡丸的脂肪和蛋白氧化速度显著降低(P0.05)。当仙草提取液添加量为总肉重的10%时,贡丸感官品质评分最高,与对照组相比,其硬度,弹性和咀嚼性分别提高了17.73%、9.33%和16.38%,同时还改善了风味,显著抑制了脂肪和蛋白氧化(P0.05),效果与0.02%BHA相近。 相似文献
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Nata, a bacterial cellulose produced by Acetobacter aceti ssp. xylinum , was colored by means of fermentation with Monascus purpureus. Scanning electron microscopy (SEM) observations showed that the Monascus mycelium could grow through the cellulose network of nata. Rice powder as a major carbon source and monosodium glutamate (MSG) as a nitrogen source gave an appealing coloration after 12 d of fermentation at 30 °C. Compared to dyed nata, the color of the Monascus -nata complex had better resistance to washing, heat, freezing, acidification, and alkalization. A 66.1% decolorization was found under irradiation with 366 nm ultraviolet light after 36 h. The Monascus -nata complex has the potential to be a new vegetarian foodstuff. 相似文献
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椰子纳塔发酵条件研究 总被引:15,自引:2,他引:15
研究了一株醋酸杆菌(Acetobactersp.)在椰子水培养液中发酵产生纳塔(nata)的适宜工艺条件:蔗糖7%,NH4Cl0.4%,KH2PO40.2%,MgSO40.02%,CaCl20.02%,FeSO40.0005%(W/V),酵母膏0.05%,柠檬酸0.02%,椰子水50%~100%(V/V),pH4.0,用大口容器盛装,30℃静置培养14~18d。在此条件下,于500ml烧杯中发酵16d,最高可收获182g重,3.3cm厚的纳塔,其外观和品质均符合纳塔食品的加工要求。 相似文献
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质构是潮州牛肉丸品质的决定因素,为正确合理地评价潮州牛肉丸质构特性,对感官评定与仪器分析2种方法进行比较。选用11种市售潮州牛肉丸,采用质地剖面检验法进行感官评定,质构仪(质构剖面分析模式,剪切力模式,穿刺模式)进行仪器分析。运用主成分分析从潮州牛肉丸质构的感官评定与仪器分析数据中提取出2个独立主成分,这2个主成分解释了74.486%的数据,并把样品分成了3类。对感官评定与仪器分析结果进行相关性分析,发现感官评定与仪器分析结果之间存在广泛的程度不同的相关性(r=-0.622~0.896,P<0.05或P<0.01)。以主要感官指标为因变量,仪器分析指标为自变量,进行逐步回归分析,得到具有统计意义的感官硬度、弹性、紧密性、多汁性和易嚼性的预测方程(R2adj=0.696~0.907)。 相似文献
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Physicochemical properties, sensory traits, and protein surface hydrophobicity of Chinese-style meatball (20% fat) processed from various combinations of xylooligosaccharides (XOS) and sucrose were investigated. No significant differences in pH and water-holding capacity were noted for treatments following cooking and frozen storage. Sensory springiness, hardness, chewiness, and overall acceptability of all treatments were found not significantly different. Water-soluble protein and total extractable protein concentrations of XOS4 (4% xylooligosaccharides) containing treatments were higher than other treatments at any frozen storage period (0, 4, 8, and 12 weeks). Addition of xylooligosaccharides or sucrose singly or in combination at levels investigated in this experiment resulted in Chinese meatballs with comparable quality. Substitution of sucrose with varying amounts (1, 2, and 4%) of xylooligosaccharides functioned equally on the quality of Chinese-style meatball. 相似文献
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基于TPA测试的蔬菜猪肉丸质地特性研究 总被引:2,自引:2,他引:0
蔬菜肉丸是一种营养丰富的特色肉糜食品,其研究主要集中在感官评价基础上的工艺优化.采用物性测定仪对蔬菜汁猪肉丸子进行硬度、耐咀性等分析,从而得出不同蔬菜汁、胶体的加入对猪肉丸质地的影响.结果显示,在相等的量的加入下,白菜汁质地好于芹菜汁好于番茄汁,胶体加入中卡拉胶好于明胶. 相似文献
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Ken Tokuyasu Kenji Yamagishi Junko Matsuki Daisuke Nei Tomoko Sasaki Masakazu Ike 《Journal of Applied Glycoscience》2021,68(4):77
Pulverization is a potentially powerful solution for the resource management of surplus- and non-standard agricultural products, maintaining their nutritional values for long and ensuring their homogeneity, whereas their original textures could disappear to narrow the application ranges. Therefore, new technologies should be developed for reconstructing the powders to provide them with new physical characteristics. Herein, we developed a novel food material, nata puree (NP), by nata de coco (bacterial cellulose gel) disintegration with a water-soluble polysaccharide using a household blender. The process worked well with (1,3)(1,4)-β-glucan (BGL) as the polysaccharide, which could be substituted with barley extract. Lichenase treatment of the NP dramatically modified its physical properties, suggesting the importance of the BGL polymeric forms. NP exhibited distinct potato powder and starch binding activities, which would be attributed to its interactions with the cell wall components and a physical capture of powders by the NP network, respectively. NP supplementation into the potato paste improved its firmness and enabled its printable range shift for 3D food printing to a lower powder-concentration. NP also promoted the dispersion of powders in its suspension, and designed gelation could also be successfully performed by the laser irradiation of an NP suspension containing dispersed curdlan and turmeric powders. Therefore, NP could be applied as a powder modifier to a wide range of products in both conventional cooking, food manufacturing, and next generation processes such as 3D food printing. 相似文献
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魔芋胶是一种优质的膳食纤维和功能性食品胶,为降低猪肉丸中的脂肪含量,改善其食用品质,本实验采用单因素分析法及正交实验设计,用质构仪测定猪肉丸的四个重要质构指标:硬度、弹性、黏聚性和耐咀性,并以此为基础确定综合质构指标,向猪肉丸中添加魔芋胶,研究其对肉丸品质的影响。结果表明,添加质量分数为2%的魔芋胶,不会影响肉丸的质构品质,并且可以降低脂肪含量。最终确定猪肉丸中优化的添加物量为:魔芋胶2g/100g猪肉,淀粉16g/100g猪肉,碱[Ca(OH)2]0.48g/100g猪肉。 相似文献
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为提高猪血豆腐在冷冻条件下的品质特性,以新鲜猪血为原料,添加羧甲基纤维素钠(carboxymethyl cellulose sodium,CMC-Na)和羟乙基纤维素(hydroxyethyl cellulose,HEC),研究其对冷冻猪血豆腐蒸煮损失、色差、质构及感官品质的影响。结果表明:CMC-Na和HEC添加量均为1.00 g/100 mL时,冷冻猪血豆腐的蒸煮损失比未添加CMC-Na和HEC分别降低69.65%、86.82%(P<0.05),质构特性中的硬度、弹性、咀嚼性比未添加CMC-Na和HEC分别提高41.01%、20.03%、83.43%(P<0.05),其色泽指标红度值和黄度值高于鸭血豆腐(P<0.05),感官上嫩度软硬适中、切面密实、几乎无气孔。因此,添加CMC-Na和HEC能提高冷冻猪血豆腐的品质特性。 相似文献
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Sweet potato-based pasta product: optimization of ingredient levels using response surface methodology 总被引:1,自引:0,他引:1
Sukhcharn Singh Charanjit Singh Raina Amrinder Singh Bawa & Dharmesh Chandra Saxena 《International Journal of Food Science & Technology》2004,39(2):191-200
Sweet potato flour was used for the development of a pasta product. The system known as response surface methodology was used to analyse the effect of sweet potato flour, soyflour, water, Arabic gum and carboxy methyl cellulose (CMC) on quality responses (sensory, solids loss and hardness) of the pasta product. A rotatable central‐composite design was used to develop models for the responses. Responses were affected most by changes in soyflour and gum levels and to a lesser extent by sweet potato flour and water levels. Individual contour plots of the different responses were superimposed and regions meeting the maximum sensory score (33.8), minimum solids loss (16.6%) and maximum texture hardness (5616 g) were identified at 674 g kg?1 sweet potato flour, 195 g kg?1 water, 110 g kg?1 soyflour, 10.6 g kg?1 Arabic gum and 10.1 g kg?1 CMC levels. 相似文献
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纳米纤维素具有可再生性、可生物降解性等优点,是当前纳米技术领域的研究热点。文章对有关纳米纤维素的相关论文、专利和国家自然科学基金资助项目情况进行了统计,分析了国内纳米纤维素的研究进展,以期为纳米科学领域的研究人员提供参考。检索关键词为纳米微晶纤维素、纳纤化纤维素、微纤化纤维素、细菌纤维素,检索时间范围为:2001.01~2015.10。研究结果表明,2011年后,纳米纤维素研究发展迅速,论文发文量呈快速上升趋势,并进入技术成长期;2010年后,相关专利申请数量稳步上升,纳米微晶纤维素和细菌纤维素的相关专利数量增长明显;2011年,国家自然科学基金相关项目的申请数量快速增多。 相似文献