当前位置:首页>南京>Food Chem|南京农业大学黄明教授团队:肉类产品中细菌芽孢控制的研究进展与策略演进:萌发机制、新兴控制技术及未来展望

Food Chem|南京农业大学黄明教授团队:肉类产品中细菌芽孢控制的研究进展与策略演进:萌发机制、新兴控制技术及未来展望

  • 2026-04-17 12:57:27
Food Chem|南京农业大学黄明教授团队:肉类产品中细菌芽孢控制的研究进展与策略演进:萌发机制、新兴控制技术及未来展望

Food Chemistry| 肉类产品中细菌芽孢控制的研究进展与策略演进:萌发机制、新兴控制技术及未来展望

近日,南京农业大学团队在《Food Chemistry》期刊上发表了题为《肉类产品中细菌芽孢控制的研究进展与策略演进:萌发机制、新兴控制技术及未来展望》的综述论文(一区,IF:9.8)。该研究聚焦芽孢杆菌和梭菌属芽孢对肉类产业的危害,系统阐述了芽孢萌发的分子机制(包括营养型与非营养型萌发路径),探讨了温和物理灭活技术(如温和加热、超声波、高压等)的应用效果,以及药食同源材料中生物活性化合物的靶向抑制作用,提出 “有效诱导萌发 - 温和物理灭活 - 靶向抑制” 三阶段控制策略,为开发安全优质、感官与营养保留良好的肉类产品提供了理论支撑与技术参考。

Background

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细菌芽孢主要由芽孢杆菌属和梭菌属产生,凭借其对热力、化学及物理处理的极强抗性,成为肉类产业面临的持续性挑战,常导致肉类产品腐败变质和食源性疾病发生。传统热力灭菌虽为常用控制手段,但易破坏产品的感官与营养品质。在欧洲和北美,微生物导致的肉类腐败约占食品总损失的 21%,中国流通零售环节的肉类损失中也有 8% 源于微生物污染,且高达 60% 的包装肉类产品中存在芽孢,低浓度芽孢在适宜条件下即可萌发。尽管多国已制定相关管控标准,但芽孢的强抗性仍使控制难度较大,因此亟需开发高效、温和且能保留产品品质的芽孢控制策略,这也推动了对芽孢萌发机制、新型灭活技术及天然抑制物质的深入研究。

Results

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1. 肉类中主要芽孢形成细菌及抗性特征

芽孢杆菌属(如枯草芽孢杆菌、蜡样芽孢杆菌)和梭菌属(如产气荚膜梭菌、腐败梭菌)是导致肉类腐败的主要芽孢形成菌,前者多见于有氧环境下的肉类产品,易引发黏液产生、色泽劣变,后者在真空包装冷藏肉类中更为突出,常导致胀袋、异味等问题。

这些芽孢的耐热性极强,其耐热性常用 D 值(特定温度下杀灭 90% 芽孢所需时间)和 z 值(D 值下降一个对数周期所需升高的温度)衡量,且耐热性受菌株种类、食品基质、恢复条件等多种因素影响,单一热力处理难以彻底灭活且易损伤产品品质。

2. 芽孢萌发机制与核心调控因素

芽孢萌发分为营养型和非营养型两类:营养型萌发依赖氨基酸(如 L - 丙氨酸)、糖类等营养物质与芽孢内膜上的萌发受体(GRs)结合启动;非营养型萌发则由高压、热激活、表面活性剂等因素触发,无需 GRs 参与,可通过激活皮层溶解酶(CLEs)、促进二吡啶甲酸钙(CaDPA)释放等途径完成。

芽孢萌发过程涉及多种关键蛋白调控,如芽孢杆菌属的 GerA、GerB 等 GRs,梭菌属特有的皮层溶解酶 SleC,以及促进 germinant 渗透的 GerP 蛋白等,不同属种芽孢的萌发分子机制存在显著差异。

3. 芽孢控制的三阶段核心策略

有效诱导萌发:利用营养 germinant(如 AGFK 混合剂、L - 丙氨酸)或非营养因素(如 60-80℃热激活、100-600 MPa 高压)诱导芽孢萌发,使其从休眠抗性状态转变为易被灭活的营养体状态。

温和物理灭活:萌发后的芽孢对温和处理敏感性显著提升,采用 80-90℃温和加热、超声波、冷等离子体、脉冲电场(PEF)等技术,可在保留肉类品质的前提下实现高效灭活,且多种技术组合使用(如热超声、高压 + 温和加热)能进一步提升效果。

靶向抑制:药食同源材料(MEHMs)中的酚类化合物(如甘草黄酮、姜黄素)、精油(如肉桂油、丁香油)等生物活性物质,可通过破坏芽孢结构、干扰萌发信号通路或抑制芽孢萌发后生长等方式,实现对残留芽孢的靶向控制,且安全性高、消费者接受度好。

4. 现有研究不足与未来方向

目前对梭菌属芽孢萌发的分子机制、组合处理的协同作用机理仍缺乏深入理解,多数研究聚焦于 MEHMs 粗提物,对单一活性成分的作用靶点尚不明确。

未来需强化梭菌属芽孢萌发机制研究、设计工业化适用的三阶段整合工艺、开发针对残留芽孢的精准抑制技术,并在实际加工储存条件下系统验证策略的有效性,推动实验室成果向产业应用转化。

图文赏析

Graphical abstract

Fig. 1. Germination mechanism of B. subtilis spores induced by L-alanine. Germination mechanism of B. subtilis spores induced by L-alanine. Question marks indicate molecular events whose mechanisms remain elusive. OM, outer membrane; GCW, germ cell wall; IM: inner membrane; CLE, cortex lytic enzyme; SASPs, small acid-soluble spore proteins.

Fig. 2. Germination mechanism of C. perfringens spores. Question marks indicate molecular events whose mechanisms remain elusive. OM, outer membrane; GCW, germ cell wall; IM: inner membrane; CLE, cortex lytic enzyme; SASPs, small acid-soluble spore proteins.

Fig. 3. Conceptual framework of mild physical technologies for bacterial spore control in meat products. The inner circle presents the principal techniques, while the outer sections illustrate their application strategies, advantages, and limitations.

Fig. 4. Schematic representation of representative edible and medicinal ingredients, including their enriched parts, main active compounds, and proposed mechanisms of action against bacterial spores.

原文链接

https://doi.org/10.1016/j.foodchem.2026.148648

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  1. CONNECT:[ UseTime:0.000514s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000669s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000289s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000289s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000474s ]
  6. SELECT * FROM `set` [ RunTime:0.000236s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000644s ]
  8. SELECT * FROM `article` WHERE `id` = 498600 LIMIT 1 [ RunTime:0.000446s ]
  9. UPDATE `article` SET `lasttime` = 1776645257 WHERE `id` = 498600 [ RunTime:0.005848s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000263s ]
  11. SELECT * FROM `article` WHERE `id` < 498600 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001498s ]
  12. SELECT * FROM `article` WHERE `id` > 498600 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000513s ]
  13. SELECT * FROM `article` WHERE `id` < 498600 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.004405s ]
  14. SELECT * FROM `article` WHERE `id` < 498600 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001029s ]
  15. SELECT * FROM `article` WHERE `id` < 498600 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001229s ]
0.096806s