Effect of Spices on the Quality of Chinese Bacon
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摘要: 为提高腊肉品质,在腌制过程中分别添加0.6%、1.2%和2.4%的香料提取物(包括花椒、八角、香叶、茴香、肉桂和丁香)。熏制时,将提取后的香辛料残渣按相应的比例加入到熏烟材料中。成品真空包装后,分别在冷藏1 d和120 d后测定样品的理化指标、脂肪和蛋白质氧化、亚硝酸盐残留量、色泽、质构、微生物含量和感官品质等。结果表明,添加0.6%的香料对腊肉品质影响不大。当香料添加量增加到1.2%和2.4%时,能显著抑制脂肪氧化和微生物生长,更好地保持腊肉在冷藏过程中的质地和弹性。然而,2.4%的香料添加量对腊肉颜色、感官质量和蛋白质氧化有轻微的负面影响。因此,在腊肉加工过程中,加入适当香辛料能改善腊肉品质,而加入1.2%的香料对提高腊肉品质的效果最好。Abstract: In order to improve the quality of Chinese traditional smoked bacon, the 0.6%, 1.2% and 2.4% of spice extracts (including zanthoxylum bungeanum, star anise, bay leave, fennel, cinnamon and clove) were added in the processing of pickling. When being smoked, the corresponding proportion of spice residues after extract was added into the fumigation material. Following vacuum packing, the physicochemical, lipid and protein oxidation, nitrite residue, instrumental color, texture, microbial content, and sensory quality of the samples were respectively determined after 1 and 120 days of refrigeration. The results showed that the addition of 0.6% spice had little effect on bacon quality. The amount of addition amount increased to 1.2% and 2.4%, it could significantly inhibit lipid oxidation and microbial growth, and better maintained the soft texture and good elasticity of bacon during refrigeration. However, the addition of 2.4% had a little negative effect on instrumental color, sensory quality, and protein oxidation of products. Therefore, in the process of bacon processing, adding appropriate spices can improve the quality of bacon, and adding 1.2% spices has the best effect on improving the quality of bacon.
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Key words:
- smoke-cured bacon /
- spice /
- pickling /
- smoking /
- low salt bacon
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表 1 实验中使用的微生物培养计数方法
Table 1. Microbial counting method used in present study
微生物种类 平板计数培养基 培养条件 参考标准 细菌总数 PCA 37 ℃/48 h GB 4789.2-2016 大肠杆菌 VRBDA 37 ℃/24 h,双层 GB 4789.3-2016 霉菌和酵母菌 PDA 28 ℃/5 d GB 4789.15-2016 葡萄球菌 Baird-Parker 37 ℃/48 h GB 4789.10-2016 乳酸菌 MRS 37 ℃/72 h,无氧 GB 4789.35-2016 假单胞菌 CFC 26 ℃/48 h SN/T 4044-2014 表 2 不同香料浓度对腊肉理化指标、脂肪和蛋白质氧化、亚硝酸盐含量的影响
Table 2. Effect of different spice concentration on the physicochemical parameters, lipid and protein oxidation, and nitrite in bacon
组别 指标 水分含量
(%)pH NaCl(%) 亚硝酸盐
(mg/kg)TBARS
(mg MDA/kg)羰基值
(nmol/mg)1 d 对照 49.48±2.13a 5.57±0.03b 4.29±0.21a 18.76±1.44b 0.61±0.06a 10.96±1.78a 0.6% 51.36±2.02a 5.47±0.02a 4.33±0.19a 11.33±0.98a 0.65±0.12a 10.53±1.05a 1.2% 50.47±2.76a 5.66±0.02c 4.21±0.30a 12.34±1.12a 0.56±0.16a 10.86±1.49a 2.4% 49.66±1.76a 5.67±0.03c 4.17±0.19a 17.86±1.33b 0.62±0.14a 9.72±1.26a 120 d 对照 46.87±1.78a 5.36±0.04a 4.38±0.22a 4.57±0.55c 1.06±0.19b 16.12±1.14ab 0.6% 47.65±1.12a 5.32±0.04a 4.41±0.18a 3.17±0.29b 0.90±0.24ab 15.02±1.67a 1.2% 48.14±2.04a 5.49±0.08b 4.33±0.20a 4.32±0.31c 0.67±0.10a 16.34±1.46ab 2.4% 47.32±1.69a 5.57±0.07b 4.29±0.14a 1.93±0.20a 0.73±0.10a 20.03±3.30b 注:同列不同小写字母表示差异显著(P<0.05);表3~表6同。 表 3 不同香料浓度对腊肉色泽的影响
Table 3. Effect of different spice concentration on the color parameters in bacon
组别 指标 L* a* b* 1 d 对照 40.2±4.6b 19.3±3.2c 6.5±1.2a 0.6% 30.5±3.1a 18.0±2.0bc 5.7±1.4a 1.2% 32.5±4.4a 16.0±1.7ab 6.0±1.6a 2.4% 30.3±3.6a 13.8±2.3a 4.7±1.3a 120 d 对照 31.3±3.2c 16.5±1.6a 9.3±1.9a 0.6% 27.2±2.4ab 15.2±1.7a 7.4±2.0a 1.2% 30.3±3.3bc 14.8±1.6a 8.3±1.8a 2.4% 25.5±3.1a 16.7±3.0a 8.3±1.9a 表 4 不同香料浓度对腊肉质地的影响
Table 4. Effect of different spice concentration on the texture in bacon
组别 指标 硬度(kg) 弹性 内聚性 黏性(kg) 咀嚼性(kg) 1 d 对照 5.23±0.73a 0.86±0.06a 0.64±0.05a 3.34±0.68a 2.88±0.70a 0.6% 5.19±0.65a 0.84±0.04a 0.65±0.06a 3.40±0.62a 2.87±0.54a 1.2% 5.43±0.48a 0.83±0.05a 0.62±0.06a 3.37±0.42a 2.80±0.43a 2.4% 5.64±0.32a 0.84±0.05a 0.66±0.04a 3.71±0.19a 3.10±0.18a 120 d 对照 7.88±0.55b 0.84±0.06a 0.71±0.06a 5.65±0.81b 4.73±0.73b 0.6% 7.45±0.44b 0.88±0.05a 0.68±0.04a 5.10±0.41b 4.46±0.41b 1.2% 6.24±0.50a 0.85±0.05a 0.64±0.08a 3.97±0.50a 3.36±0.50a 2.4% 6.33±0.53a 0.89±0.05a 0.67±0.06a 4.26±0.50a 3.78±0.44a 表 5 不同香料浓度对腊肉中微生物的影响(log CFU/g)
Table 5. Effect of different spice concentration on the microbes in bacon (log CFU/g)
组别 指标 细菌总数 乳酸菌 霉菌和酵母菌 大肠杆菌 假单胞菌 葡萄球菌 1 d 对照 5.08±0.27c 4.73±0.23c 2.36±0.23ab <1 2.38±0.21b 3.95±0.38b 0.6% 4.67±0.24bc 4.37±0.32bc 2.60±0.23b <1 2.18±0.18b 3.78±0.26b 1.2% 4.27±0.26ab 3.98±0.30ab 1.82±0.53a <1 1.45±0.16a 3.16±0.24a 2.4% 4.12±0.22a 3.81±0.27a 1.77±0.31a <1 1.53±0.14a 3.09±0.38a 120 d 对照 6.93±0.35b 6.81±0.29b 3.55±0.24a 2.28±0.27a 3.75±0.43c 5.57±0.31b 0.6% 6.38±0.25ab 6.19±0.20ab 3.78±0.33a 2.21±0.24a 3.49±0.17bc 5.22±0.30ab 1.2% 5.76±0.36a 5.63±0.33a 3.32±0.30a 1.78±0.45a 2.78±0.36a 4.92±0.33a 2.4% 5.83±0.45a 5.75±0.47a 3.47±0.41a 1.67±0.28a 2.94±0.18ab 4.86±0.32a 表 6 不同香料浓度对腊肉感官品质的影响
Table 6. Effect of different spice concentration on the sensory quality in bacon
组别 指标 色泽 质地 气味 味道 整体评分 1 d 对照 6.80±0.79b 6.60±0.70a 6.70±0.82a 6.50±0.71a 6.60±0.70a 0.6% 6.60±0.84b 6.20±0.63a 6.40±0.70a 6.30±0.68a 6.40±0.84a 1.2% 6.30±0.82ab 6.30±0.68a 6.30±0.68a 6.20±0.42a 6.30±0.92a 2.4% 5.70±0.68a 6.50±0.53a 6.60±0.70a 6.20±0.63a 6.10±0.88a 120 d 对照 5.80±0.63b 6.00±0.82a 5.70±0.67a 5.20±0.63a 5.30±0.67a 0.6% 6.10±0.74b 6.50±0.53a 6.20±0.63ab 5.90±0.74b 6.00±0.47b 1.2% 5.70±0.48ab 6.30±0.82a 6.80±0.63b 6.40±0.52b 6.10±0.57b 2.4% 5.20±0.63a 6.40±0.70a 6.70±0.67b 6.10±0.57b 5.90±0.57b -
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