共查询到17条相似文献,搜索用时 62 毫秒
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对宰后8h的牛肉分别注射200、250、300mmol/LCaCl2溶液(注射量为肉重的3%),然后将处理样品在4℃下分别腌制12h、24h、48h,通过对其剪切力值的测定,研究注射氯化钙及腌制时间对牛肉嫩度的影响。结果表明,与未注CaCl2溶液组相比,注射CaCl2溶液组牛肉嫩度显著提高(P<0.05),但不同水平CaCl2溶液处理之间牛肉嫩度差异不显著(P>005);不同腌制时间对牛肉嫩度的影响差异不显著(P>0.05)。综合分析,200mmol/L的CaCl2溶液处理浓度、48h的腌制时间改善牛肉的嫩度是可行的。 相似文献
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探讨超声波结合氯化钙处理在不同成熟期对牛肉色泽、系水力、蒸煮损失及嫩度的影响。选择对宰后12h成年母黄牛的臀肉注射300mmol/L 氯化钙(注射量分别为肉质量的5%、10%),样品再分别在强度为133W/m2 的超声波中处理6、12min,即4 个处理组(Ⅰ组注射量5%、处理6min,Ⅱ组注射量5%、处理12min,Ⅲ组注射量10%、处理6min,Ⅳ组注射量10%、处理12min),对照组未作任何处理。各组分别在4℃成熟1、2、3、4、5、7d时检测肉块的色泽、系水力、蒸煮损失及嫩度(剪切力)。结果表明:注射10% 氯化钙结合超声波处理12min 对牛肉的色泽、系水力、蒸煮损失改善效果最好,注射5% 氯化钙结合超声波处理6min 对改善嫩度效果最显著(P <0.05),剪切力平均降低了28.41%。所以超声波结合氯化钙处理牛肉能明显改善牛肉品质。 相似文献
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大量的研究发现,氯化钙处理可以改善肉的嫩度。本文就氯化钙处理对肉嫩化的应用和机理研究进展情况作一综述。 相似文献
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对牛肉分别注射300mmol/LCaCl2溶液、EDTA溶液、ZnCl2溶液(注射量为肉重的5%),然后将处理样品在4℃下分别腌制24h、48h,通过对其剪切力值、MFI的测定,初步研究牛肉嫩化的机制。结果表明,注射CaCl2能促进肌原纤维的分解,进而加速肉的嫩化;而注射EDTA和ZnCl2却抑制肌原纤维的分解,阻止肉的嫩化。牛肉的嫩化是Ca^2+通过促进肌原纤维的分解而实现的。 相似文献
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仿真技术检测牛肉嫩度方法研究 总被引:3,自引:0,他引:3
嫩度是牛肉品质的重要检测指标之一。检测牛肉嫩度的传统方法是感官评定法和剪切力测定法,然而这两种方法存在不同程度的人为误差。本文设计了基于压力传感器的仿真磨齿咀嚼装置,其由电机驱动,利用曲柄连杆机构及曲柄滑块机构带动下颚产生上、下的往复运动,上颚产生左右的往复运动,从而模拟磨齿咀嚼过程。结合感官评定法,建立了牛肉嫩度等级评定标准,验证了仿真技术检测牛肉嫩度的可行性。采用此方法,牛肉嫩度等级检测准确率达到85%,说明仿真磨齿咀嚼装置设计合理,具有实用价值。 相似文献
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氯化钙处理对牛肉系水力影响的研究 总被引:1,自引:0,他引:1
试验采用2因素有重复试验设计,研究对宰后8h的牛肉分别注射肉重3%的浓度为200mmol/L、250mmol/L、300mmol/L的CaCl2溶液,然后将处理样品在4℃下腌制12h、24h、48h,通过对其煮熟率的测定,分析注射CaCl2溶液及腌制时间对牛肉系水力的影响。试验结果表明:与对照组相比,不同浓度的CaCl2溶液处理对牛肉煮熟率影响差异不显著(P>0.05);不同腌制时间对牛肉煮熟率的影响差异亦不显著(P>0.05)。注射CaCl2溶液对牛肉的系水力无显著影响。 相似文献
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Using reflectance spectroscopy to predict beef tenderness 总被引:1,自引:0,他引:1
A study was conducted to determine if reflectance measurements made in the near-infrared region of the spectrum were additive to reflectance measurements made in the visible region of the spectrum for predicting Warner–Bratzler shear force (WBSF) values. Eighty seven strip loins were collected following fabrication over 3 d at a commercial beef processing facility from heifer carcasses with Slight or Traces marbling scores. Spectroscopic measurements were made at approximately 50 h postmortem using a Hunter-Lab UltraScan. Subsequently, all strip loins were aged for 14 d, cooked to an internal temperature of 70 °C, and sheared to obtain WBSF values. Reflectance measurements obtained in the near-infrared region of the spectrum were correlated with WBSF values, however, these measurements were not additive to the predictive ability of reflectance measurements (R2 values did not differ) made in the visible portion of the spectrum when the use of broad-band wavelength filters were simulated. It was therefore determined, that both the visible and near-infrared spectra measure reflectance and that both methods are acceptable methods of tenderness prediction. 相似文献
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几种牛肉嫩化方法的研究 总被引:9,自引:0,他引:9
采用正交实验方法和感官评定方法来优化和评价氯化钙溶液注射、生姜汁注射、木瓜蛋白酶溶液注射对牛肉嫩度等的影响。实验结果表明,氯化钙溶液的浓度和注射量、生姜汁的注射量、木瓜蛋白酶溶液的浓度和处理时间显著影响牛肉的嫩度(P<0.05)。 相似文献
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Bovine longissimus muscle tenderness as affected by postmortem aging time, animal age and sex 总被引:3,自引:0,他引:3
Strip loins were removed from 10 bulls and 10 steers ~14 mo old and from 10 cows ≥ 44 mo. Samples were removed at 3, 7, 14, and 28 days postmortem. Shear-force values were measured. Sensory evaluation was done by a 15-member trained panel. Animal age and postmortem aging time had more influence on tenderness attributes than did sex of the animal. Increased postmortem aging time improved tenderness attributes regardless of sex or age. 相似文献