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切割果蔬中的病原微生物是影响其安全的重要因素,本文综述了利用微生物保障切割果蔬安全的主要作用方式,包括拮抗作用、抑制作用、侵染作用以及多种方式的联合作用,并提出了微生物控制促进切割果蔬安全的发展方向。 相似文献
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本文从切割、化学处理和贮藏各个环节较为详细地探讨了它们对鲜切果蔬产品挥发性风味造成的影响,以期为调控鲜切果蔬风味,提高产品质量,延长产品贮藏寿命和货架期提供理论参考. 相似文献
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HACCP是一个保证食品安全的预防性管理系统,结合马铃薯净菜的生产工艺流程,将HACCP质量控制体系应用到马铃薯净菜生产加工工艺中,进行危害分析,确定关键控制点,提出解决途径,使生产过程中危害因素降到最低限度,旨在确保净菜产品的的卫生质量,提高产品的安全性,给马铃薯净菜生产的相关企业提供一个参考。 相似文献
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目的将HACCP管理体系应用在鲜切草莓加工和保鲜生产中。通过HACCP体系可进行预防与控制食品原料生产、加工、贮运到销售等过程中可能存在的潜在危害,并能最大限度地降低风险,更有效地保证食品的安全。方法以草莓为试验材料,采用HACCP体系对鲜切草莓加工和保鲜过程中可能的潜在危害进行分析,确定关键控制点和关键限值,提出相应的预防措施和监测方法。结果确定了原料验收、切割、保鲜处理、包装、贮存5个关键控制点,构建了鲜切草莓加工和保鲜的HACCP管理体系模式。结论将HACCP管理体系运用于鲜切草莓加工与保鲜过程中,提高了该产品质量安全卫生水平。 相似文献
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为筛选出适宜的黄瓜鲜切加工新品种,本试验针对18个参加品比试验的华南型黄瓜优良组合和对照品种(燕白黄瓜)开展了鲜切加工适宜性评价,测定了含水率、可溶性固形物含量(TSSC)、果肉厚度、种腔直径、果肉色差(L*、a*、b*值)、果皮硬度、果肉硬度、感官指标(口感、脆度)和出品率12项指标。通过统计分析、相关性分析和因子评价确定了7个鲜切黄瓜加工适宜性筛选的主评价指标,通过层次分析确定了主评价指标的权重,通过灰色关联度分析对19个黄瓜样品材料的鲜切加工适宜性进行了排序,同时结合各样品的田间栽培性状优选出较适宜的鲜切加工样品材料编号为4#和2#。以上结果可为鲜切黄瓜加工过程中原料的选择提供科学依据,也可为华南型黄瓜鲜切加工专用品种的选育提供指导。 相似文献
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Suriyan Supapvanich Chairat Techavuthiporn 《International Journal of Food Science & Technology》2022,57(3):1679-1687
The aim of this study was to investigate the competency of pre-process anoxia treatment on physicochemical quality of fresh-cut pineapples cv. ‘Phulae’ during storage. The fruits were kept in anoxia atmosphere (N2) for 16 h before processing. The fruits were processed immediately after treatment (G1) and after storage at 13 °C for 6 days (G2). Anoxia treatment delayed the weight loss and had no effect on the L* value of both G1 and G2 fresh-cut pineapples. The yellowness (b*) value of G1 fresh-cut pineapple was maintained by anoxia. The PPO activity of anoxia-treated G1 and G2 fresh-cut pineapples was lower than that of untreated fresh-cut fruits (control). Total sugars contents of both G1 and G2 anoxia-treated fresh-cut pineapples trended to be higher than that of control samples. Anoxia had no influence on the total ascorbic acid content during storage. The increases in total bacteria and yeast of both G1 and G2 fresh-cut pineapples were retarded by anoxia. In conclusion, anoxia is a feasible alternative to maintaining quality and delaying microbial increases in fresh-cut pineapples during storage. 相似文献
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Chlorine is widely used as a sanitizer to maintain the microbial quality and safety of fresh-cut produce; however, chlorine treatment lacks efficacy on pathogen reduction, especially when the fresh-cut processing water contains heavy organic loads. A more efficacious sanitizer that can tolerate the commercial processing conditions is needed to maintain microbial safety of fresh-cut produce. This study evaluated the efficacy of Escherichia coli O157:H7 reduction on fresh-cut carrots using new and traditional sanitizers with tap water and fresh-cut processing water scenarios. Fresh-cut carrot shreds inoculated with E. coli O157:H7 were washed in sanitizer solutions including 200 ppm chlorine, citric acid-based sanitizer (Pro-San), 80 ppm peroxyacetic acid-based sanitizer (Tsunami 100), and 1,000 ppm acidified sodium chlorite (SANOVA) prepared in fresh tap water or simulated processing water with a chemical oxygen demand level of approximately 3,500 mg/liter. Samples were packaged and stored at 5 degrees C. Microbial analyses performed at days 0, 7, and 14 indicate that the organic load in the process water significantly affected the efficacy of chlorine on pathogen removal and was especially evident on samples tested during storage. Acidified sodium chlorite provided a strong pathogen reduction even under process water conditions with up to a 5.25-log reduction when compared with the no-wash control. E. coli O157:H7 was not recovered on acidified sodium chlorite-treated samples during the entire 14 days of storage, even following an enrichment step. These results suggest that acidified sodium chlorite holds considerable promise as an alternative sanitizer of fresh-cut produce. 相似文献
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壳聚糖涂膜与牛至精油复配对鲜切菠萝的 保鲜作用 总被引:1,自引:0,他引:1
目的研究壳聚糖涂膜及与牛至精油复配对鲜切菠萝的保鲜的影响。方法在低温环境中,按照0.1%、0.3%和0.5%不同浓度的牛至精油与壳聚糖复配,并分别以水、壳聚糖涂膜处理为对照,分析不同处理方式对鲜切菠萝硬度、Vc含量、过氧化物酶(POD)、多酚氧化酶(PPO)、过氧化氢酶(CAT)和脂氧合酶(LOX)活性的影响。结果壳聚糖涂膜与0.5%的牛至精油复配后可减缓组织软化;与0.1%牛至精油复配可以维持Vc含量的缓慢降低。在不同处理组中,当含有0.3%和0.5%牛至精油时,鲜切菠萝的POD和CAT活性则呈下降趋势,而其他处理组则显著升高;当含有壳聚糖处理组时,其PPO和LOX活性则低于对照组。结论壳聚糖与牛至精油复配涂膜会在减缓鲜切菠萝营养损失的情况下延长其货架期。 相似文献