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 molecule 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 ± 0.9 μg of piceatannol per mg of the extract, while Soxhlet extraction for 120 min resulted in a dark lumpy extract containing 13.03 ± 0.4 μg 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.

除了作为食物外，百香果（Passiflora edulis Sims ）还提供种子作为油源，榨油后残留的种子饼含有 piceatannol，一种可以防止皮肤损伤的分子。在这项工作中，微波辅助提取 (MAE) 被评估为一种制备富含云杉醇的种子饼提取物的技术，并将其性能与传统的索氏提取进行比较。MAE 和 Soxhlet 对种子饼化合物表现出不同的选择性。在 87 °C 下使用 70% EtOH 进行连续 MAE，每个循环 30 分钟，提供每毫克提取物中含有 27.17 ± 0.9 μg piceatannol 的精细棕色粉末，而索氏提取 120 分钟导致黑色块状提取物含有13.03 ± 0.4 微克毫克^-1. 因此，MAE 被证明是生产用于化妆品目的的百香果种子提取物的有前途的替代品，通过提供更快的提取和更颜色友好且更易于处理的产品，为百香果链中的残留物增加价值。与传统方法相比，piceatannol 的水平。