Identification of Functional Groups and Types of Anthocyanin Pigments of Purple Sweet Potato cv. Antin 2 and cv. Antin 3

Farida Siti,Saati Elfi Anis,Damat Damat, Wahyudi Ahmad, Van Minh Nguyen

BIO Web of Conferences(2024)

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摘要
Purple sweet potatoes (Ipomoea batatas L. Lam.) contain anthocyanin pigments which act as natural antioxidants which are very beneficial for health. The research aimed to identify the functional groups and types of anthocyanin pigments in purple sweet potato cv. Antin 2 and cv. Antin 3, using FTIR and identification of anthocyanin pigment types using LCMS/MS. The results of FTIR analysis show that the purple sweet potato cultivar Antin 2 has 12 spectrum peaks ranging from wavelengths of 570.48 cm-1 to 3 394.40 cm-1. Functional groups detected include benzene nuclei, hydrocarbons (dominating), carbonyls, carboxyl esters, aromatics, aldehydes, and alcohols. Meanwhile, the purple sweet potato cultivar Antin 3 has 15 spectrum peaks ranging from wavelengths of 417.88 cm-1 to 3 365.86 cm-1. The functional groups detected include core-benzene hydrocarbons, carboxyl esters, methyl, aromatics, carbonyls, carbonyl esters, aldehydes, aldehyde carbons, and hydroxyl carbons. The LCMS/MS identification results of purple sweet potato anthocyanin pigments of the Antin 2 cultivar detected 11 types, including Cyanidin 3-(6“-caffeoyl sophoroside)-5-glucoside and Cyanidin 3-(6“-feruloyl sophoroside)-5-glucoside. In the purple sweet potato cultivar Antin 3, 14 types of anthocyanins were found, including, Malvidin 3-5 diglicoside, Cyanidin 3-(6“-caffeoyl sophoroside)-5-glucoside, Cyanidin, and Cyanidin 3-(6“feruloyl sophoroside)-5-glucoside.
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关键词
ipomoea batatas l,natural antioxidant,patata douce,plant bioactive,protect free radical.
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