21939
Citral is a flavour component widely used in food and cosmetic industries , but is chemically unstable and degrades over time in aqueous solutions due to acid - catalysed and oxidative reactions leading to loss of desirable flavour .
 Citral
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Citral