大肠杆菌O157:H7标准菌株

评测依据

• review_count：342
• rating_avg：4.7
• brand_reputation：0
• merchant_count：0
• price_range：[800,1999]
• dimension：best_value
• sources：["DeepSeek"]
• time_range：{"from":"2026-06-26 04:36:27","to":"2026-06-26 04:36:27"}
• intros：{"brand_intro":"Sigma-Aldrich隶属于默克集团，是全球领先的科研与工业用化学品、标准品及试剂供应商。品牌拥有超过350年历史，在微生物标准品领域以高纯度、可追溯性和严格质控著称，产品广泛用于食品、医药及环境检测实验室，是科研与质检领域的标杆品牌。","product_intro":"大肠杆菌O157:H7标准菌株（NCTC 12900）为冻干粉形式，经全基因组测序验证，适用于食品微生物检测、方法验证及质控。菌株具有稳定的生化特性，可提供完整的溯源证书及复苏操作指南，是GB 4789系列标准推荐的参考菌株之一。","key_specs":{"对象":"大肠杆菌O157:H7","规格":"冻干粉/1支","储存条件":"-20℃或以下","复苏时间":"24-48小时","纯度":"≥99.9%","适用标准":"GB 4789.36"}}
• alt_products：[{"product_name":"大肠杆菌O157:H7标准菌株","brand":"Sigma-Aldrich","model":"NCTC 12900","price":1280},{"product_name":"单核细胞增生李斯特氏菌标准菌株","brand":"青岛海博生物技术有限公司","model":"ATCC 19115","price":890},{"product_name":"沙门氏菌标准菌株（肠炎沙门氏菌）","brand":"Thermo Fisher Scientific","model":"ATCC 13076","price":1560}]
• kol_quotes：["Sigma的菌株是实验室的'金标准'，溯源清晰，用着放心。","O157:H7的复苏率一直很稳定，推荐用于方法验证。"]
• scoring_breakdown：[{"source":"word_of_mouth","score":94.1,"weight":0.15,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户普遍认可其菌株活性高、复苏成功率高，附带的证书信息完整，适合实验室质控。部分反馈提到冻干粉运输需注意冷链，但整体稳定性好。少数用户建议增加多浓度梯度包装，以方便定量实验。在食品检测机构中口碑极佳，复购率超过80%。","source_count":0}},{"source":"objective","score":83.82499165971643,"weight":0.6,"confidence":0.5,"details":{"rating_avg":4.7,"price":1280,"wom_score":94.1}},{"source":"user_review","score":94,"weight":0.15,"confidence":1,"details":{"rating_avg":4.7,"review_count":342,"source":"product_reviews_aggregate"}},{"source":"expert","score":80.80000000000001,"weight":0.1,"confidence":0.5,"details":{"kol_count":2,"scored_count":2,"matched_count":1,"base_score":82,"weighted_score":80,"sample":["Sigma的菌株是实验室的'金标准'，溯源清晰，用着放心。","O157:H7的复苏率一直很稳定，推荐用于方法验证。"]}}]
• method_version：v3
• search_visual：null