Zhang, Xiaowei published the artcileStability, structure, and antioxidant activity of astaxanthin crystal from Haematococcus pluvialis, Formula: C18H24N6O6S4, the publication is Journal of the American Oil Chemists’ Society (2022), 99(5), 367-377, database is CAplus.
Crystallized anthaxanthin was prepared through the cleaning crystallization method and the stabilities during thermal, lighting, and pH treatment, and antioxidant activities in vitro were evaluated. The structural characterizations of astaxanthin crystal were verified by 1H, 13C NMR, and XRD anal. The stability data showed that the astaxanthin crystal was more sensitive to heat, light, and pH compared to oleoresin. The sucrose had no outstanding influence on the astaxanthin crystal, while the stability of astaxanthin oleoresin slightly increased with the increase of sugar concentration The XRD and NMR spectra elucidated that the astaxanthin crystal was all trans structure. The astaxanthin crystal showed the dominant 1,1′-diphenyl-2-picrylhydrazyl (IC50 18.65 μmol L-1), 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt +(21.1 μmol L-1), •OH (IC50 49.46 μmol L-1) and ferric reducing antioxidant power (IC50 81.60 μmol L-1) activities. The investigated results would be helpful for improving the development of astaxanthin crystal in food products.
Journal of the American Oil Chemists’ Society published new progress about 30931-67-0. 30931-67-0 belongs to thiazole, auxiliary class Salt,Hydrazine,Amine,Benzothiazole, name is Ammonium 2,2′-(hydrazine-1,2-diylidene)bis(3-ethyl-2,3-dihydrobenzo[d]thiazole-6-sulfonate), and the molecular formula is C20H40O2, Formula: C18H24N6O6S4.
Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/thiazole,
Thiazole | chemical compound | Britannica