Results 131 to 140 of about 4,224 (156)

Effects of heat, ultrasound, and microwave processing on the stability and antioxidant activity of delphinidin and petunidin

Journal of Food Biochemistry, 2019
The effects of conventional heating, ultrasonic, and microwave treatments on the stability and antioxidant activities of anthocyanidin standards (delphinidin and petunidin) were studied. The antioxidant activities of delphinidin and petunidin significantly decreased during the treatments, which suggested that the antioxidant activities of the ...
Zeyuan Deng, Hong-Yan Li, Furong Wang
exaly   +3 more sources

Petunidin as a competitive inhibitor of acylated homoserine lactones in Klebsiella pneumoniae

RSC Advances, 2016
Most of the bacterial species communicate with each other through a mechanism called Quorum Sensing (QS) to regulate their phenotypic characteristics.
Venkadesaperumal Gopu, Prathapkumar Halady Shetty, Chetan Kumar Meena   +2 more
exaly   +2 more sources

Petunidin, a B-ring 5′-O-Methylated Derivative of Delphinidin, Stimulates Osteoblastogenesis and Reduces sRANKL-Induced Bone Loss [PDF]

International Journal of Molecular Sciences, 2019
Several lines of evidence suggest that oxidative stress is one of the key pathogenic mechanisms of osteoporosis. We aimed to elucidate the bone protective effects of petunidin, one of the most common anthocyanidins, considering its potent antioxidative activity. Petunidin (>5 μg/mL) significantly inhibited osteoclastogenesis and downregulated c-fos,
Marlena Kruger, Yasumasa Kato, Toyonobu Maeda   +2 more
exaly   +4 more sources

Synergistic antioxidant effects of petunidin and lycopene in H9c2 cells submitted to hydrogen peroxide: Role of Akt/Nrf2 pathway

Journal of Food Science, 2020
Abstract Phenolics and carotenoids coexist in fruits and vegetables and could possess interaction effects after consumption. The present study aims to elucidate the possible mechanisms of the antioxidant interactions between anthocyanins and carotenoids using petunidin and lycopene as ...
Zeyuan Deng, Rong Tsao, Hong-Yan Li
exaly   +3 more sources

Lack of Short-term Memory Improvement in Caenorhabditis elegans after Petunidin-3-glucoside Supplementation

Journal of Preventive, Diagnostic and Treatment Strategies in Medicine, 2023
BACKGROUND:Learning and memory can be enhanced by antioxidants by protecting the neurons against oxidative damage. Phytochemicals, like anthocyanins, may hold the potential to improve cognitive function by ameliorating neuronal damage induced by reactive oxygen species. Petunidin-3-glucoside (P3G) is one of the different classes of anthocyanin found in
Jan Mackenzie Guese, Cherry Pie Hernandez, Mark Edrex Mabalot, John Sylvester Nas   +3 more
openaire   +1 more source

The antioxidant activity and active sites of delphinidin and petunidin measured by DFT, in vitro chemical-based and cell-based assays

Journal of Food Biochemistry, 2019
A computational DFT B3LYP method with 6-311G (d,p) basis set, the in vitro chemical-based and cellular antioxidant activity (CAA) assays were applied in this study to explain the structure-antioxidant activity relationships of delphinidin and petunidin.
Zeyuan Deng, Hong-Yan Li
exaly   +3 more sources

Petunidin suppresses Hashimoto’s thyroiditis by regulating Th1/Th17 homeostasis and oxidative stress

Cellular Immunology
Hashimoto's thyroiditis (HT) is a prevalent autoimmune thyroid disease, necessitating further research to identify effective treatment strategies. Two key pathophysiological factors of HT are inflammation and oxidative stress. Petunidin (PET) is an anthocyanin with anti-inflammatory and antioxidant properties. This study aimed to investigate the effect
Beiyan Liu
exaly   +3 more sources

Synthesis of malvidin and petunidin in pigmented tissue cultures ofPetunia hybrida

Protoplasma, 1981
In petunia cells culturedin vitro anthocyanin synthesis is usually repressed resulting in white/ yellow cells. However, we observed that in petunia strain AK-5000 purple cells appeared at a frequency of about 5 × 10−5. Analysis of the pigments showed that these cells contained the same anthocyanidins (petunidin and malvidin) as found in corollas of the
C. M. Colijn, L. M. V. Jonsson, A. W. Schram, A. J. Kool   +3 more
openaire   +1 more source

Synthesis and Properties of 5,7-dimethylated anthocyanins: Focusing on peonidin-3-O-glucoside and petunidin-3-O-glucoside

Food Chemistry
This study developed an efficient chemical synthesis method for 5,7-dimethylated anthocyanins (Pn3GdM and Pt3GdM) to improve the poor liposolubility and instability of anthocyanins. The synthesis involved selective methylation of the A ring using a total synthesis approach and methoxy protection mediated by dimethyl sulfate.
Weibin Bai
exaly   +3 more sources

Optimized Synthesis and Antioxidant Activity of Anthocyanins Delphinidin-3-O-glucoside and Petunidin-3-O-glucoside

Journal of Agricultural and Food Chemistry
The chemical synthesis of anthocyanins, especially delphinidin-3-O-glucoside and petunidin-3-O-glucoside, is preferable due to the challenges associated with their extraction and purification. However, the reported methods for the synthesis are scarce and intricate. Our research focused on exploring a one-step ester-to-ketone process and optimizing the
Guangkai Wu, Zihan Zhao, Jun Hu, Yue Li, Jianxia Sun, Weibin Bai   +5 more
openaire   +2 more sources