Zhang, Xue-wei published the artcileEcotoxicological effects of 50 kinds of fragrance materials on Microcystis aeruginosa, Category: ethers-buliding-blocks, the publication is Zhongguo Huanjing Kexue (2021), 41(3), 1429-1435, database is CAplus.
In the present study, the 50 fragrance materials were performed to determine the ecol. toxicity on Microcystis aeruginosa. The influence of four fragrance materials (2-methoxynaphthalene, thymol, myrcene and indole) on the content of chlorophyll a and soluble protein, superoxide dismutase (SOD) activity, catalase (CAT) activity and malondialdehyde (MDA) content were also studied. The results showed that 2-methoxynaphthalene, thymol, myrcene and indole can significantly inhibit the growth of Microcystis aeruginosa under high concentration exposure, and the half-effect concentration EyC50 value was 1.81, 1.26, 0.55 and 1.40 mg/L, resp., showing an obvious dose-effect relationship. At a treatment concentration of 1 mg/L, 2-methoxynaphthalene and thymol significantly inhibited the content of chlorophyll a and soluble protein (P<0.0001). Exposure to 2-methoxynaphthalene resulted in a significant decrease in SOD activity (P<0.0001), the other two antioxidant enzymes had no significant effect (P>0.05); Thymol significantly inhibited POD activity (P<0.0001), and myrcene also reduced SOD activity (P<0.01). The activities of POD and CAT of Microcystis aeruginosa treated with indole were significantly lower than those of the control group (P<0.0001). Studies showed that these four fragrance materials inhibited the antioxidant enzyme activity, accumulate excessive MDA, and destroyed the content and function of chlorophyll, which in turn leads to the abnormal growth of algae. 2-methoxynaphthalene, thymol and indole are aromatic compounds, and myrcene was an olefin. The difference in structure of the four fragrance compounds resulted to the different effects on antioxidant enzymes. 2-Methoxynaphthalene was a synthetic fragrance. Although thymol, myrcene and indole were all natural flavors, they were mostly prepared by artificial synthesis. The current findings will enrich the fundamental data for evaluating the risk and toxicity of fragrance materials on the ecosystems. Because of their unique aromatic odor, aromatic compounds have become a large category of fragrance materials and are widely used. However, the aromatic ring is stable and difficult to degrade, so we need to pay more attention to the ecol. safety of the fragrance materials with aromatic ring structure.
Zhongguo Huanjing Kexue published new progress about 93-04-9. 93-04-9 belongs to ethers-buliding-blocks, auxiliary class Naphthalene,Ether, name is 2-Methoxynaphthalene, and the molecular formula is C25H34N4O2S, Category: ethers-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem