Changes in Nutritional Metabolites of Young Ginger (Zingiber officinale Roscoe) in Response to Elevated Carbon Dioxide

Molecules

Ali Ghasemzadeh¹  Hawa Z. E. Jaafar¹  Ehsan Karimi¹  Sadegh Ashkani² 

[1] Department of Crop Science, Faculty of Agriculture, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia; E-Mails:;Institute of Tropical Agriculture, University Putra Malaysia, 43400 Serdang, Selangor, Malaysia

关键词: sugars;    CO₂ enrichment;    protein;    amino acids;    antinutrient;    Zingiber officinale;   

DOI  :  10.3390/molecules191016693

来源: mdpi

【 摘 要 】

The increase of atmospheric CO₂ due to global climate change or horticultural practices has direct and indirect effects on food crop quality. One question that needs to be asked, is whether CO₂ enrichment affects the nutritional quality of Malaysian young ginger plants. Responses of total carbohydrate, fructose, glucose, sucrose, protein, soluble amino acids and antinutrients to either ambient (400 μmol/mol) and elevated (800 μmol/mol) CO₂ treatments were determined in the leaf and rhizome of two ginger varieties namely Halia Bentong and Halia Bara. Increasing of CO₂ level from ambient to elevated resulted in increased content of total carbohydrate, sucrose, glucose, and fructose in the leaf and rhizome of ginger varieties. Sucrose was the major sugar followed by glucose and fructose in the leaf and rhizome extract of both varieties. Elevated CO₂ resulted in a reduction of total protein content in the leaf (H. Bentong: 38.0%; H. Bara: 35.4%) and rhizome (H. Bentong: 29.0%; H. Bara: 46.2%). In addition, under CO₂ enrichment, the concentration of amino acids increased by approximately 14.5% and 98.9% in H. Bentong and 12.0% and 110.3% in H. Bara leaf and rhizome, respectively. The antinutrient contents (cyanide and tannin) except phytic acid were influenced significantly (P ≤ 0.05) by CO₂ concentration. Leaf extract of H. Bara exposed to elevated CO₂ exhibited highest content of cyanide (336.1 mg HCN/kg DW), while, highest content of tannin (27.5 g/kg DW) and phytic acid (54.1 g/kg DW) were recorded from H.Bara rhizome grown under elevated CO₂. These results demonstrate that the CO₂ enrichment technique could improve content of some amino acids and antinutrients of ginger as a food crop by enhancing its nutritional and health-promoting properties.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.