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Badanie in vitro działania chemicznych składników owoców kotewki orzecha wodnego i ich aktywności względem komórek niedrobnokomórkowego raka płuc A549

Mao Zhifang, Wang Qing, Cheng Faxiu, Zhang Zhiyong, Cary, Kang Gongli, Li Ying

Przemysł Chemiczny

2019

T. 98, nr 2

204--207

Z łupin owoców kotewki orzecha wodnego wyekstrahowano niektóre składniki chemiczne i oznaczono w nich zawartość polifenoli metodą kolorymetryczną. Do ekstrakcji wykorzystano etanol oraz wodę. Ekstrakt zastosowano do zwalczania komórek raka płuc A549 i sprecyzowano jego działanie hamujące wzrost tych komórek. Zawartość polifenoli w odmianie Trapa natans L. var. incisa Makino była większa niż w odmianie Trapa bicornis var. bispinosa. Lepszym ekstrahentem polifenoli okazał się etanol. Wskaźnik zahamowania wzrostu komórek rakowych A549 ekstraktu alkoholowego z Trapa bicornis var. bispinosa był większy w porównaniu z ekstraktem wodnym, zaś wskaźnik zahamowania wzrostu komórek rakowych ekstraktu wodnego z Trapa natans L. var. incisa Makino był wyższy niż ekstraktu wodnego z Trapa bicornis var. bispinosa.

Some chem. components were extd. from chestnut shells with EtOH or H₂O and studied for content of polyphenols by colorimetric method. The ext. was applied to control lung cancer A549 cells and its growth inhibitory effect was detd. The content of polyphenols in Trapa natans L. var. incisa Makino was higher than that in Trapa bicornis var. bispinosal. EtOH was more efficient in extg. polyphenols than H₂O. The inhibition rate of the EtOH ext. of Trapa bicornis var. bispinosal on lung cancer A549 cells was higher than that of the aq. ext., and the inhibition rate of the aq. ext. of Trapa natans L. var. incisa Makino on the growth of lung cancer A549 cells was higher than that of the aq. ext. in the Trapa bicornis var. bispinosa.

Establishment of a rapid method to quantify eight flavonol glycosides for quality assessment of red toon using UPLC

Shen Y., Xu M., Deng P., Gu Q., Yin H., Xia G., Jia X., Yang H., Tam J.

Acta Chromatographica

2018

Vol. 30, no. 1

31--37

Red Toon is a popular vegetable of favorable health benefits over Asia and Russia regions. In this study, isolation and identification of chemical constituents were performed to assess the quality of this functional food cultivated in various origins or harvested in different months. As a result, eight flavonol glycosides including rutin (I), myricitrin (II), quercetin-3-O-β-d-galactoranoside (III), quercetin-3-O-β-d-glucopyranose (IV), quercetin-3-O-α-l-arabinopyranoside (V), astragalin (VI), quercetin-3-O-α-l-rhamopyranoside (VII), and kaempferol-3-O-α-l-rhamopyranoside (VIII) were obtained. Among these, compounds III and V were isolated from Toona genus for the first time. Importantly, a rapid and convenient ultra-performance liquid chromatography (UPLC) method was developed to quantify the flavonol glycosides in Red Toon and validated for linearity, precision, stability, repeatability, and accuracy successively. In addition, it was found that total flavonoid glycosides (about 2.6%) in the food were kept at a higher level from April to June than other months of the year. Furthermore, their content in the Red Toon collected from ten different origins was also determined and compared, and the results suggested that the total flavonoid glycosides from Shandong Yantai were the highest, followed by Shandong Ximou, supporting a well-recognized viewpoint that Red Toon cultivated in Shandong Province, China, is considered genuine due to the best health benefits and flavor.