没食子酸丙酯 (PG) 抗氧化剂标准品

评测依据

• review_count：1800
• rating_avg：4.6
• brand_reputation：0
• merchant_count：0
• price_range：[100,299]
• dimension：best_value
• sources：["天猫","京东","源叶生物官网","小红书"]
• time_range：{"from":"2026-06-25 15:23:44","to":"2026-06-25 15:23:44"}
• intros：{"brand_intro":"源叶生物成立于2009年，是中国领先的科研试剂与标准品供应商，总部位于上海。公司拥有CNAS认证实验室和2000㎡标准化仓库，主打\"高性价比国产替代\"。其创始人团队来自中科院上海药物所，品控理念强调\"每一批次均通过HPLC、LC-MS双重验证\"。源叶在抗氧化剂标准品领域市占率国内前三，尤其受高校课题组青睐。","product_intro":"没食子酸丙酯（PG）是食品工业中常用的合成抗氧化剂，也是油脂氧化稳定性测试的标准品。核心卖点：纯度≥99%（HPLC）、价格仅为进口品牌的1/5、提供中文版SDS和COA。适用于食用油抗氧化剂残留检测、化妆品配方稳定性研究等场景。相比Sigma同类产品，源叶的PG在加速氧化实验中（60°C/10天）的降解曲线高度一致，但价格优势显著。","key_specs":{"纯度":"≥99% (HPLC)","分子量":"212.20 g/mol","储存条件":"2-8°C, 密封避光","溶解性":"溶于甲醇 (50 mg/mL) 或乙酸乙酯 (30 mg/mL)","CAS号":"121-79-9","包装规格":"100mg/瓶"}}
• alt_products：[{"product_name":"没食子酸丙酯 (PG) 抗氧化剂标准品","brand":"源叶生物","model":"R20313-100mg","price":180}]
• kol_quotes：[]
• scoring_breakdown：[{"source":"word_of_mouth","score":86.5,"weight":0.15,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"天猫和京东评价显示：用户满意度集中在\"性价比极高\"和\"发货快\"（平均24小时内出库）。专业评测对比发现，其纯度与Sigma产品无显著差异（99.2% vs 99.5%），但价格低80%。缺点：部分批次COA中未提供核磁图谱，仅依赖HPLC数据；小包装（100mg）对于需要大量标曲的用户不够友好。小红书用户评价：\"国产良心，做食品抗氧化实验完全够用，省下的钱可以买奶茶。\"","source_count":4}},{"source":"objective","score":80.4146984924623,"weight":0.6,"confidence":0.5,"details":{"rating_avg":4.6,"price":180,"wom_score":86.5}},{"source":"user_review","score":92,"weight":0.15,"confidence":1,"details":{"rating_avg":4.6,"review_count":1800,"source":"product_reviews_aggregate"}}]
• method_version：v3
• search_visual：null