经过评估，专家小组认为该添加剂对所有动物物种和环境是安全的，由于缺乏数据，无法就羟丙基甲基纤维素对使用者的安全性作出结论。专家小组指出，该添加剂用于所有动物物种的饲料中是有效的。部分原文报道如下：

 

　　Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP ) was asked to deliver a scientific opinion on microcrystalline cellulose as a feed additive for all animal species. Microcrystalline cellulose is intended for use as a technological additive (functional groups: emulsifier, stabiliser, thickener, gelling agent and binder) in premixtures and feedingstuffs for all animal species with no minimum and maximum content. A proper identification and characterisation of microcrystalline cellulose as required for a feed additive is not available and the occurrence of potential toxic impurities cannot be assessed. The following conclusions apply only to microcrystalline cellulose meeting the food additive specifications. The FEEDAP Panel concluded that microcrystalline cellulose is considered safe for all animal species. The use of microcrystalline cellulose in animal nutrition is of no concern for consumer safety. In the absence of data, the FEEDAP Panel was not in the position to conclude on the safety of microcrystalline cellulose for the user. The use of microcrystalline cellulose as a feed additive is considered safe for the environment. The additive is considered to be efficacious in feedingstuffs for all animal species.