Passion fruit seed extract enriched in piceatannol obtained by microwave-assisted extraction was written by Silva, Gislaine C.;Rodrigues, Rodney A. F.;Bottoli, Carla B. G.. And the article was included in Sustainable Chemistry and Pharmacy in 2021.Electric Literature of C14H12O4 This article mentions the following:
Apart from being food, passion fruit (Passiflora edulis Sims) offers seeds to be used as an oil source, and the residual seed cake from oil extraction contains piceatannol, a mol. that can prevent skin damages. In this work, microwave-assisted extraction (MAE) was evaluated as a technique for the preparation of piceatannol-rich seed cake extracts, and its performance was compared to the conventional Soxhlet extraction MAE and Soxhlet exhibited different selectivities for the seed cake compounds A sequential MAE at 87°C, with 70% EtOH, for 30 min each cycle, provided a fine brown powder with 27.17 ± 0.9μg of piceatannol per mg of the extract, while Soxhlet extraction for 120 min resulted in a dark lumpy extract containing 13.03 ± 0.4μg mg-1. Thus, MAE was shown to be a promising alternative to produce a passion fruit seed extract for cosmetic purposes, adding value to a residue from the passion fruit chain by providing a faster extraction and a more color friendly and easier-to-handle product with higher levels of piceatannol in comparison to the conventional method. In the experiment, the researchers used many compounds, for example, (E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol (cas: 10083-24-6Electric Literature of C14H12O4).
(E)-4-(3,5-Dihydroxystyryl)benzene-1,2-diol (cas: 10083-24-6) belongs to alcohols. Because alcohols are easily synthesized and easily transformed into other compounds, they serve as important intermediates in organic synthesis. Secondary alcohols are easily oxidized without breaking carbon-carbon bonds only as far as the ketone stage. No further oxidation is seen except under very stringent conditions.Electric Literature of C14H12O4
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