@article{article_442798, title={DETERMINATION OF FLAVONOIDS IN CITRUS FIBER AND THE IMPACT OF PROCESSING METHOD ON TOTAL PHENOLIC CONTENT, TOTAL FLAVONOID CONTENT, TOTAL CAROTENOID CONTENT AND OXYGEN RADICAL ABSORBANCE CAPACITY}, journal={Gıda}, volume={43}, pages={917–924}, year={2018}, DOI={10.15237/gida.GD18072}, url={https://izlik.org/JA96BZ94WX}, author={Gedikoğlu, Ayça and Clarke, Andrew Douglas and Gruen, İngolf}, keywords={Citrus, fiber, flavonoid, total polyphenol content, ORAC value, HPLC}, abstract={<p class="MsoNormal" style="margin-bottom:.0001pt;line-height:normal;">The objective of this study is
to evaluate the presence of flavonoids in citrus fıber using reverse-phase
high-pressure liquid chromatography (RP-HPLC). In this study, we also
investigate the effect of regular and hot-washing preparations on total
polyphenol content (TPC), total flavonoid content (TFC), oxygen radical
absorbance capacity (ORAC) and total carotenoid content (TCC) of citrus fiber.
The HPLC method used provided fast results and good separation for
polymethoxyflavones and flavonols. Quercetin and kaempferol (flavonols), and
sinensetin, nobiletin, heptamethoxyflavone, and tangeretin
(polymethoxyflavones) were identified. Nobiletin had the highest concentration
with 3.33 mg/g dry weight followed by sinensetin (1.96 mg/g dry weight) and
heptamethoxyflavone (1.24 mg/g dry weight), respectively. The TFC and TCC of
citrus fiber were unaffected (P >0.05) by the citrus fiber production
procedure; however, the TPC and the ORAC values of citrus fiber prepared using
hot-washing were significantly lower (P < 0.05).  </p> <p> </p>}, number={6}