冷冻西兰花质保两年有营养吗？专家：维生素损失少于冰箱冷藏一周

Core Insights - The recent open kitchen event by Xibei revealed six types of "pre-prepared" ingredients, with frozen broccoli drawing significant consumer attention [1] - Industry analyst Zhu Danpeng stated that the processing technology for long shelf-life pre-prepared dishes is mature and does not require preservatives [1] - Nutritionist Zhou Zhongyi explained that commercial frozen fruits and vegetables undergo blanching before freezing, which may cause a loss of about 20% of water-soluble vitamins, but subsequent low-temperature freezing can significantly delay further vitamin loss [1] Industry Analysis - The two-year shelf life of frozen broccoli is not uncommon in the market, with retailers like Sam's Club offering such products [1] - Zhou Zhongyi emphasized that while fresh fruits and vegetables are preferable when available, commercially frozen options are a good choice for long-term storage [1]