English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Japanese honeysuckle (Lonicera japonica Thunb.) is a traditional Chinese medicinal herb usually used to treat inflammatory disorders. The contents of two major active constituents of Japanese honeysuckle, chlorogenic acid and luteolin, vary with the plant’s development stage. This study aims to analyze the antioxidants and major active constituents of Japanese honeysuckle using different extraction methods at various flowering stages. To achieve the highest efficacy of major active constituents, methanol extraction was better than water extraction. After treatment with microwaves for 3 Min (M3), the mean contents of chlorogenic acid and luteolin obtained using methanol were 42.96 and 1.22 mg/g DW, respectively, which were highest of all treated groups. Of the different flower bud stages, total phenolic content was highest during the Silver Flower (SF) stage, with mean values of 26.91 and 25.82 mg/g DW for water and methanol extraction, respectively. The highest trolox content was also observed at this stage, with mean values of 27.02 and 28.62 mg/g DW for methanol and water extraction, respectively. The level of chlorogenic acid increased with the development of flower buds from the Juvenile Bud (JB) stage to the Gold Flower (GF) stage. The highest value obtained using methanol extraction was 24.45 mg/g DW at the SF stage and the highest values obtained using water extraction were 11.28 and 11.25 mg/g DW at the White Bud (WB) and SF stages, respectively. On the other hand, the content of luteolin obtained using methanol extraction decreased with flower bud development. The highest luteolin levels (0.60 mg/g DW) were found at the JB and Green Bud (GB) stages. For water extraction, however, luteolin content increased with flower bud development, reaching its highest level (0.142 mg/g DW) at the GF stage. The present results can be applied to determine the optimal harvest stage and postharvest treatment method for Japanese honeysuckle.

hsoa journal of agronomy and agricultural science

Effect Of Different Extraction Methods On Major Bioactive Constituents At Different Flowering Stages Of Japanese Honeysuckle (Lonicera Japonica Thunb.)