Comparing between solvent extracts, the different numbers of compounds in each extract lead to the difference in percentage of the compound, even though the same amount. The more number of compounds lead to lesser percent of each compound in the extract. For example, among betel solvent extracts, hexane extract had the highest amount of β-caryophyllene (Figure 4), but the percentage of the compounds in hexane extract (2.27%) was less than in EtOAc extract (3.27%)(Figure 3).