Abstract:Tremella was cultivated from non-medicinal parts of mulberry branch or platycodon grandiflorum，and the effects on the yield，nutritional quality and safety of tremella were investigated by using traditional cottonseed shell as control.The results showed that the growth of tremella was good，and its fresh weight，diameter and biological efficiency were similar to those of the control group.The total sugars and polysaccharides in mulberry branch and platycodon grandiflorum medium were 16.67% and 23.5% higher than those in control group.The content of crude fiber in mulberry branch medium was 13.75% higher than that in control medium.There was no significant difference in the amino acid types and total contents of tremella in the medium group of mulberry branch and platycodon grandiflorum，but the total contents of essential amino acids were significantly higher than the control group，29.8% higher and 12.8% higher respectively.The Ca，Fe，Mn，Na，Mg and K of tremella in the mulberry branch medium group were higher than those in the control group，while the Mn，Cu，Na and K of tremella in the platycodon grandiflorum medium group were higher than those in the control group.There was no gossyphenol problem in the cultivation of tremella with mulberry branch and platycodon grandiflorum medium，and the sanitary indexes of its pesticide residues，heavy metals and bongkrekic acid were far lower than the limit value stipulated by the national standards.The results showed that it was feasible to cultivate tremella japonica in non-medicinal parts of mulberry branch or platycodon grandiflorum.