Journal ArticleDOI
Identification and characterization of foliar polyphenolic composition in sweetpotato (Ipomoea batatas L.) genotypes.
Md. Shahidul Islam,Makoto Yoshimoto,Shoji Yahara,Shigenori Okuno,Koji Ishiguro,Osamu Yamakawa +5 more
TLDR
Six different polyphenolic compounds were identified and quantified by NMR, FABMS, and RPHPLC analysis procedures and are reported on in what is the first report ofpolyphenolic compositions in sweetpotato leaves.Abstract:
Trials over two years were conducted using 1389 sweetpotato (Ipomoea batatas L.) genotypes collected from all over the world to characterize the polyphenolic composition in sweetpotato leaves. Wide variation was observed in relation to their total and individual leaf polyphenolic constituents. In all genotypes studied, the total polyphenol contents of sweetpotato leaf ranged from 1.42 to 17.1 g/100 g dry weight. The six different polyphenolic compounds were identified and quantified by NMR, FABMS, and RPHPLC analysis procedures. This is the first report of polyphenolic compositions in sweetpotato leaves. The relative levels of polyphenolic acids in sweetpotato leaves were as follows: 3,5-di-O-caffeoylquinic acid > 4,5-di-O-caffeoylquinic acid > chlorogenic acid (3-O-caffeoylquinic acid) > 3,4-di-O-caffeoylquinic acid > 3,4,5-tri-O-caffeoylquinic acid > caffeic acid. The highest 3,4,5-tri-O-caffeoylquinic acid and 4,5-di-O-caffeoylquinic acid occurred at 221 and 1183.30 mg/100 g dry weight, respectively. ...read more
Citations
More filters
Journal ArticleDOI
Phenolics and polyphenolics in foods, beverages and spices: Antioxidant activity and health effects – A review
TL;DR: A review of phenolic and polyphenolic compounds can be found in this article, which summarizes both the synthetic and natural phenolic antioxidants, emphasizing their mode of action, health effects, degradation products and toxicology.
Journal ArticleDOI
The use of plants in the traditional management of diabetes in Nigeria: pharmacological and toxicological considerations.
TL;DR: A review of medicinal plants traditionally used for diabetes management in Nigeria and ways in which their therapeutic potential can be properly harnessed for possible integration into the country's healthcare system are highlighted.
Journal ArticleDOI
A Screening Method for the Identification of Glycosylated Flavonoids and Other Phenolic Compounds Using a Standard Analytical Approach for All Plant Materials
Long-Ze Lin,James M. Harnly +1 more
TL;DR: The utility of the screening method is demonstrated by the identification of 78 phenolic compounds in cranberry, elder flower, Fuji apple peel, navel orange peel, and soybean seed.
Journal ArticleDOI
Nutritional potential of two leafy vegetables: Moringa oleifera and Ipomoea batatas leaves
TL;DR: In this paper, the levels of some nutrients in Moringa oleifera leaves as well as seven varieties of sweet potato (Ipomoea batatas) leaves were determined using standard analytical methods.
Journal ArticleDOI
Growth suppression of human cancer cells by polyphenolics from sweetpotato (Ipomoea batatas L.) leaves.
TL;DR: 3,4,5-tri-O-caffeoylquinic acid effectively depressed the growth of three kinds of cancer cells, and caffeic acid had an exceptionally higher effect against HL-60 cells than other di- and tricaffeoyLquinic acids.
References
More filters
Journal ArticleDOI
Antioxidant capacity as influenced by total phenolic and anthocyanin content, maturity, and variety of Vaccinium species
Ronald L. Prior,Guohua Cao,A. Martin,Emin Sofic,J. Mcewen,C. O'brien,N. Lischner,M. Ehlenfeldt,Wilhelmina Kalt,G. Krewer,C. M. Mainland +10 more
TL;DR: Different cultivars of four Vaccinium species were analyzed for total phenolics, total anthocyanins, and antioxidant capacity (oxygen radical absorbance capacity, ORAC).
Journal ArticleDOI
Phenolic compounds and their role in oxidative processes in fruits
TL;DR: In this article, the role of phenolic compounds as either antioxidants or substrates in browning reactions is examined. But the authors do not consider the effect of dietary intake and metabolic fate on the performance of browning.
Journal ArticleDOI
Occurrence and content of hydroxycinnamic and hydroxybenzoic acid compounds in foods.
TL;DR: The distribution of the main phenolic acid compounds in food plants as well as their changes during development and maturation of fruits are considered and the analysis of phenolic Acid derivatives are reviewed.
Journal ArticleDOI
Changes in Apple Polyphenoloxidase and Polyphenol Concentrations in Relation to Degree of Browning
M.Y. Coseteng,Chang Yong Lee +1 more
TL;DR: In this paper, high performance liquid chromatography analysis of the phenolics in apples showed that the types of phenolic compounds in all cultivars were similar and that no one particular compound could account for the differences observed in browning.
Journal ArticleDOI
Antimutagenicity of Sweetpotato (Ipomoea batatas) Roots
Makoto Yoshimoto,Shigenori Okuno,Masaru Yoshinaga,Osamu Yamakawa,Masaatu Yamaguchi,Jiro Yamada +5 more
TL;DR: Comparison of the inhibitory activity of the extracts from the normal Ayamurasaki and its anthocyanin-deficient mutant one suggested that the anthOCyanin pigment in the flesh decreases the mutagenic activity ofThe mutagens as heterocyclic amines.