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<p>Black turmeric (<i>Curcuma caesia</i> Roxb.) belonging to the family of Zingiberaceae is an industrially significant species listed as a critically endangered plant. The present experiment emphasizes on giving more insight on the phytochemical screening and variation of Curcumin content with plant growth and development. The relationship between curcumin content with the plant age and rhizome biomass was studied from 2020–21 to 2021–22 on black turmeric. Pooled data for 2 years (2020–21 to 2021–22) during the growing season (Aug-Jan) showed that the maximum curcumin content (10.49%) was recorded in the 2&#xa0;months old plant whereas minimum (3.52%) was recorded in 7&#xa0;months old plant. The maximum curcumin yield (82.85&#xa0;kg/ha) was achieved in 6&#xa0;months old plant, while the minimum (16.11&#xa0;kg/ha) occurred in 2&#xa0;months old plant. Oven dried rhizome biomass was found to be maximum (13.00&#xa0;g) in the 6&#xa0;months old plant. The rhizomes extracts were obtained by refluxing with alcohol, hydro alcohol (30:70), hydro alcohol (50:50), water, ethyl acetate, petroleum ether and chloroform separately and were subsequently subjected to various tests for phytochemical screening. Stepwise regression analysis indicated that age of the plant and rhizome biomass account for 90% of the variation in curcumin content<i>.&#xa0;</i>The maximum net return (3.16 lakhs/ha) and benefit–cost ratio (2.95) was observed in 6 months old plants.</p>

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Phytochemical screening and growth stage–dependent modelling of curcumin content variation in rhizomes of Curcuma caesia Roxb.

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月13日

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  • Victor Thingujam,
  • Ongmu Lachungpa,
  • Animesh Ghosh Bag,
  • Umalaxmi Thingujam,
  • Banhisikha Roy,
  • Suman Dutta,
  • Subrata Gorain

摘要

Black turmeric (Curcuma caesia Roxb.) belonging to the family of Zingiberaceae is an industrially significant species listed as a critically endangered plant. The present experiment emphasizes on giving more insight on the phytochemical screening and variation of Curcumin content with plant growth and development. The relationship between curcumin content with the plant age and rhizome biomass was studied from 2020–21 to 2021–22 on black turmeric. Pooled data for 2 years (2020–21 to 2021–22) during the growing season (Aug-Jan) showed that the maximum curcumin content (10.49%) was recorded in the 2 months old plant whereas minimum (3.52%) was recorded in 7 months old plant. The maximum curcumin yield (82.85 kg/ha) was achieved in 6 months old plant, while the minimum (16.11 kg/ha) occurred in 2 months old plant. Oven dried rhizome biomass was found to be maximum (13.00 g) in the 6 months old plant. The rhizomes extracts were obtained by refluxing with alcohol, hydro alcohol (30:70), hydro alcohol (50:50), water, ethyl acetate, petroleum ether and chloroform separately and were subsequently subjected to various tests for phytochemical screening. Stepwise regression analysis indicated that age of the plant and rhizome biomass account for 90% of the variation in curcumin content. The maximum net return (3.16 lakhs/ha) and benefit–cost ratio (2.95) was observed in 6 months old plants.