Anthocyanins, Hydroxycinnamic Acid Derivatives, and Antioxidant Activity in Roots of Different Chinese Purple-Fleshed Sweetpotato Genotypes

2010 ◽  
Vol 58 (13) ◽  
pp. 7588-7596 ◽  
Author(s):  
Fan Zhu ◽  
Yi-Zhong Cai ◽  
Xinsun Yang ◽  
Jinxia Ke ◽  
Harold Corke
Keyword(s):  
Antioxidant Activity ◽  
Hydroxycinnamic Acid ◽  
Hydroxycinnamic Acid Derivatives

scholarly journals Hydroxycinnamic Acid Amides with Oxazole-Containing Amino Acid: Synthesis and Antioxidant Activity

2009 ◽  
Vol 64 (3-4) ◽  
pp. 176-178 ◽  
Author(s):  
Ivanka Stankova ◽  
Maya Spasova
Keyword(s):  
Antioxidant Activity ◽  
Acid Amide ◽  
Sinapic Acid ◽  
Acid Synthesis ◽  
Hydroxycinnamic Acid ◽  
Amino Acid Synthesis ◽  
Hydroxycinnamic Acid Amides ◽  
Hydroxycinnamic Acid Derivatives ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging

Three hydroxycinnamic acid derivatives conjugated with glycine-containing oxazole were synthesized. The prepared compounds were tested for their antioxidant activity using the 1,1-diphenyl-2-picrylhydrazyl (DPPH・) test. Among the tested hydroxycinnamic acid amides the highest DPPH scavenging activity has been found for the sinapic acid amide.

Effect of the frying process on the composition of hydroxycinnamic acid derivatives and antioxidant activity in flesh colored potatoes

2018 ◽  
Vol 268 ◽  
pp. 577-584 ◽  
Author(s):  
Antonieta Ruiz ◽  
Ariel Aguilera ◽  
Stefano Ercoli ◽  
José Parada ◽  
Peter Winterhalter ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Hydroxycinnamic Acid ◽  
Frying Process ◽  
Hydroxycinnamic Acid Derivatives ◽  
Colored Potatoes

Flavonoids and UV Photoprotection in Arabidopsis Mutants

2001 ◽  
Vol 56 (9-10) ◽  
pp. 745-754 ◽  
Author(s):  
Ken G Ryan ◽  
Ewald E Swinny ◽  
Chris Winefield ◽  
Kenneth R Markham
Keyword(s):  
Crucial Role ◽  
Hydroxycinnamic Acid ◽  
Ultraviolet B ◽  
Uvb Radiation ◽  
Wild Type ◽  
Hydroxycinnamic Acid Derivatives ◽  
Quercetin Glycosides ◽  
Kaempferol Glycosides ◽  
Low Levels ◽  
High Level

AbstractWild-type Arabidopsis L. leaves exposed to low ultraviolet-B (U V B ) conditions contained predominantly kaempferol glycosides, with low levels of quercetin glycosides. The flavonoid level doubled on treatment with UVB and an increase in the ratio of quercetin: kaempferol was observed. These results suggest that flavonols protect Arabidopsis plants from UVB damage, and indicate that the flavonoid 3’-hydroxylase (F3’H) enzyme, which converts dihydrokaempferol to dihydroquercetin, may play a crucial role. The tt7 mutant lacks this gene and, after treatment with sub-ambient UVB, contained kaempferol glycosides exclusively, to a level of total flavonols similar to that in wild-type Arabidopsis. Total flavonols after enhanced UVB treatment were higher in tt7 than in similarly treated wild-type plants, and only kaempferol glycosides were detected. Despite this high level, tt7 plants were less tolerant of UVB radiation than wild-type plants. These observations suggests that kaempferol is a less effective photoprotectant than quercetin. The chalcone isomerase (CHI) mutant (tt5) surprisingly did not accumulate naringenin chalcone, and this suggests that the mutation may not be restricted to the CHI gene alone. The concentration of hydroxycinnamic acid derivatives did not change with UVB treatment in most varieties indicating that their role in UV photoprotection may be subordinate to that of the flavonoids.

Drying methods and structure-activity of hydroxycinnamic acid derivatives in the Idesia polycarpa Maxim. leaves

2020 ◽  
Author(s):  
Lei Huang ◽  
Yu Zhu ◽  
Tong Peng ◽  
Jianfei Qiu ◽  
Qing Rao ◽  
...  
Keyword(s):  
Biological Activities ◽  
Hydroxycinnamic Acid ◽  
Drying Methods ◽  
Post Harvest ◽  
Structure Activity ◽  
Hydroxycinnamic Acid Derivatives ◽  
Excellent Source

The Idesia polycarpa Maxim. leaves is an excellent source of hydroxycinnamic acid derivatives which have been drawn special attention due to the various biological activities. However, the effect of post-harvest...

Synthesis and Antioxidant Properties of Hydroxycinnamic Acid Derivatives Containing Isobornyl Substituents

2019 ◽  
Vol 55 (4) ◽  
pp. 658-664 ◽  
Author(s):  
I. A. Dvornikova ◽  
E. V. Buravlev ◽  
I. V. Fedorova ◽  
O. G. Shevchenko ◽  
I. Yu. Chukicheva ◽  
...  
Keyword(s):  
Antioxidant Properties ◽  
Hydroxycinnamic Acid ◽  
Hydroxycinnamic Acid Derivatives
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