Steam Explosion Pretreatment Alters the Composition of Phenolic Compounds and Antioxidant Capacities in Chrysanthemum morifolium Ramat cv. ‘Hangbaiju’

2021 ◽  
Author(s):  
Jinyan Gong ◽  
Qian Weng ◽  
Jiachen Sun ◽  
Danli Wang ◽  
Shaoping Qiu ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Steam Explosion ◽  
Chrysanthemum Morifolium ◽  
Steam Explosion Pretreatment ◽  
Antioxidant Capacities ◽  
Chrysanthemum Morifolium Ramat

scholarly journals Comparison of Phenolic Compounds and the Antioxidant Activities of Fifteen Chrysanthemum morifolium Ramat cv. ‘Hangbaiju’ in China

Antioxidants ◽  
2019 ◽  
Vol 8 (8) ◽  
pp. 325 ◽  
Author(s):  
Jinyan Gong ◽  
Bingquan Chu ◽  
Lingxiao Gong ◽  
Zhongxiang Fang ◽  
Xiaoxu Zhang ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
High Performance Liquid Chromatography ◽  
Phenolic Compounds ◽  
High Performance ◽  
Antioxidant Activities ◽  
Principal Component ◽  
Chrysanthemum Morifolium ◽  
Caffeoylquinic Acids ◽  
Caffeoylquinic Acid ◽  
Chrysanthemum Morifolium Ramat

This study investigated the phenolic compounds of 15 Chrysanthemum morifolium Ramat cv. ‘Hangbaiju’, including 6 ‘Duoju’ and 9 ‘Taiju’, using high performance liquid chromatography (HPLC). The antioxidant activities of these ‘Hangbaiju’ were estimated by DPPH, ABTS and FRAP assays. Results show that a total of 14 phenolic compounds were detected in these flowers, including 3 mono-caffeoylquinic acids, 3 di-caffeoylquinic acids, 1 phenolic acid and 7 flavonoids. ‘Duoju’ and ‘Taiju’ possess different concentrations of phenolic compounds, and ‘Taiju’ exhibits higher caffeoylquinic acids and stronger antioxidant activities than ‘Duoju’. Caffeoylquinic acids show a strong correlation with the antioxidant activities of the samples. Principal component analysis (PCA) reveals an obvious separation between ‘Duoju’ and ‘Taiju’, using phenolic compounds as variables. Apigenin-7-O-glucoside, 3,5-di-O-caffeoylquinic acid, luteolin and acacetin were found to be the key phenolic compounds to differentiate ‘Duoju’ from ‘Taiju’.

scholarly journals Analyses of the Compositions, Antioxidant Capacities, and Tyrosinase-Inhibitory Activities of Extracts from Two New Varieties of Chrysanthemum morifolium Ramat Using Four Solvents

2021 ◽  
Vol 11 (16) ◽  
pp. 7631
Author(s):  
Yen Hua Chen ◽  
Sheng Lei Yan ◽  
Jane Yii Wu ◽  
Chang Wei Hsieh ◽  
Sue Hong Wang ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Inhibitory Activity ◽  
Reducing Sugars ◽  
Chrysanthemum Morifolium ◽  
Total Flavonoids ◽  
Chlorogenic Acids ◽  
Tyrosinase Inhibitory Activity ◽  
Antioxidant Capacities ◽  
Inhibitory Activities ◽  
Chrysanthemum Morifolium Ramat

Chrysanthemum morifolium Ramat is traditionally used as both medicine and food in China. In this study, extracts of C. morifolium Ramat Hang Ju No. 1 (No. 1) and No. 2 (No. 2) were produced using four different solvents: 95% ethanol, ethyl acetate, n-hexane and distilled water. In total, eight types of extracts were analyzed for extraction yields and total flavonoids, polyphenols, glycans, reducing sugars, and chlorogenic acids. The antioxidant capacities and tyrosinase-inhibitory activities of these extracts were also determined. Among them, the ethanolic extract of No. 1 (No. 1A) had the highest levels of total flavonoids (16.71 mg rutin equivalent/g dry weight (DW)), polyphenols (7.07 mg gallic acid equivalent/g DW), and chlorogenic acids (6595.46 μg/g DW) and the water extract of No. 1 (No. 1D) had the highest levels of total glycans (9.24 mg/g DW), and reducing sugars (23.32 μg/g DW). In terms of antioxidant capacity, No. 1A (1.0 mg/mL) demonstrated the best 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity (96.2 ± 0.4%), ferrous ion chelating ability (55.44 ± 0.03%), and reducing power (0.988 ± 0.003). No. 1D (1.0 mg/mL) showed the highest tyrosinase inhibitory activity (39.34 ± 0.03%). From these results, high levels of total flavonoids and polyphenols correlate with antioxidant capacity. Moreover, high levels of total chlorogenic acid in No. 1A and No. 1D correlate with high levels of tyrosinase inhibitory activity. Therefore, No. 1A has the potential to be used in daily health drinks, foods and skin whitening products. These results can be applied to similar flower plant extracts.

scholarly journals Comparison of Phenolic Compounds and Antioxidant Activities of Fifteen Chrysanthemum morifolium Ramat cv. ‘Hangbaiju’ in China

2019 ◽  
Author(s):  
Jinyan Gong ◽  
Bingquan Chu ◽  
Lingxiao Gong ◽  
Zhongxiang Fang ◽  
Xiaoxu Zhang ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
High Performance Liquid Chromatography ◽  
Phenolic Compounds ◽  
High Performance ◽  
Antioxidant Activities ◽  
Principal Component ◽  
Chrysanthemum Morifolium ◽  
Caffeoylquinic Acids ◽  
Caffeoylquinic Acid ◽  
Chrysanthemum Morifolium Ramat

This study investigated the phenolic compounds of 15 Chrysanthemum morifolium Ramat cv. ‘Hangbaiju’, including 6 ‘Duoju’ and 9 ‘Taiju’ using high performance liquid chromatography. The antioxidant activities of these ‘Hangbaiju’ were estimated by DPPH, ABTS and FPAR assays. Results showed that a total of 14 phenolic compounds were detected in these flowers, including 3 mono-caffeoylquinic acids, 3 di-caffeoylquinic acids, 1 phenolic acid and 7 flavonoids. ‘Duoju’ and ‘Taiju’ possessed different concentration of phenolic compounds, and ‘Taiju’ exhibited higher caffeoylquinic acids and stronger antioxidant activities than ‘Duoju’. Caffeoylquinic acids showed a strong correlation with the antioxidant activities of the samples. Principal component analysis revealed an obvious separation between ‘Duoju’ and ‘Taiju’ using phenolic compounds as variables. Apigenin-7-O-glucoside, 3,5-di-O-caffeoylquinic acid, luteolin and acacetin were found to be the key phenolic compounds to differentiate ‘Duoju’ from ‘Taiju’.

scholarly journals An extensive parameter study of hydrotropic extraction of steam-pretreated birch

2021 ◽  
Author(s):  
Johanna Olsson ◽  
Michael Persson ◽  
Mats Galbe ◽  
Ola Wallberg ◽  
Ann-Sofi Jönsson
Keyword(s):  
Residence Time ◽  
Steam Explosion ◽  
Room Temperature ◽  
Initial Step ◽  
Parameter Study ◽  
Hydrothermal Degradation ◽  
Steam Explosion Pretreatment ◽  
Lignin Extraction ◽  
Extraction Step ◽  
Lignin Recovery

AbstractEfficient fractionation of lignocellulosic biomass is an important step toward the replacement of fossil-based products. However, the utilisation of all of the components in biomass requires various fractionation techniques. One promising process configuration is to apply steam explosion for the recovery of hemicelluloses and a subsequent hydrotropic extraction step for the delignification of the remaining solids. In this work, the influence of residence time, temperature and biomass loading on lignin recovery from birch using sodium xylene sulphonate as a hydrotrope was investigated. Our results show that residence time, temperature and biomass loading correlate positively with lignin extraction, but the effects of these parameters were limited. Furthermore, when steam explosion was implemented as the initial step, hydrotropic extraction could be performed even at room temperature, yielding a lignin extraction of 50%. Also, hydrothermal degradation of the material was necessary for efficient delignification with sodium xylene sulphonate, regardless of whether it occurs during steam explosion pretreatment or is achieved at high temperatures during the hydrotropic extraction.

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