The study of volatile products formation from the self-degradation of L-ascorbic acid in hot compressed water

The volatile products (VPs) formation from the self-degradation of L-ascorbic acid (ASA) in hot compressed water (HCW) was investigated with different reaction parameters, such as time, temperature, pH and ratio of ASA/ water. The results showed that various reaction parameters had varying degrees of influence on the reaction, while the most significant effect factor was the initial pH of the solution. Furfural was the major product under acidic conditions, while furan derivatives were the main products under alkaline conditions. The above results showed that pH played the dominant role for yields and distribution of VPs in HCW. In the HCW system, the yields and classifications of VPs and conversion rate of ASA were not the same as those of VPs and ASA under traditional conditions. Based on the experimental results, the possible formation mechanism of VPs from the selfdegradation of ASA was proposed in HCW.

Automated summary

The formation of volatile products (VPs) from the self-degradation of L-ascorbic acid (ASA) in hot compressed water (HCW) was investigated through varying reaction parameters, with initial pH of the solution being the most significant factor. Different pH conditions led to different types of products, showing that pH played a dominant role in the yields and distribution of VPs in HCW. The experimental results proposed a possible formation mechanism for VPs from the self-degradation of ASA in HCW.