Component analysis of nucleosides, amino acids, and mineral elements in pollen of Gingko biloba / 中草药

ABSTRACT

Objective: To analyze the nutritional ingredient in the pollen of Gingko biloba and provide the theoretical basis for the comprehensive utilization of pollen of G. biloba. Methods: The nucleosides and dissociative amino acids in the pollen of G. biloba were detected by UPLC-TQM. The content of nucleosides in pollen of G. biloba was calculated with the help of UPLC-TQ/MS, and the mineral elements in the pollen of G. biloba were determined by ICP-AES. Results: In pollen of G. biloba there were 24 abundant dissociative amino acids accounting for 62.316 mg/g totally. In this number, dissociative essential amino acids accounted for 6.23 mg/g with the highest content of 17.11 mg/g aspartic acid (ASP). Meanwhile, a small quantity of taurine, approximately 0.24 mg/g, has been tested out. Furthermore, there were 16 kinds of nucleosides in the pollen of G. biloba. Among those nucleosides, guanosine made up for the highest percent with 251.99 μg/g while other nucleosides accounted for a low percent. In pollen of G. biloba, K is the most abundant with 26.301 mg/g, followed by Ca with 7.076 mg/g, Mg with 5.361 mg/g, and Fe with 2.545 mg/g. As to the heavy mental elements, as and Cd were not found in it. Conclusion: From above analysis, pollen of G. biloba can provide the theoretical basis for the development of health-care food with pollen of G. biloba.