Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
 
Articles by Bimal Kumar Pramanik
Total Records ( 4 ) for Bimal Kumar Pramanik
  Bimal Kumar Pramanik , Toshiyuki Matsui , Haruo Suzuki and Yusuke Kosugi
  Changes in sucrose synthase (SS) and sucrose phosphate synthase (SPS) activities and sugar content during postharvest senescence in broccoli (Brassica oleracea L. cvs. `Hartland` and `Sairin`) were studied. The first change in color became apparent between 2 and 3 d but whole head yellowed after 5 d of storage. The SS activity increased gradually in all portions although with few fluctuations in branchlets of both cultivars at the end of the storage time. In case of SPS, there was no inclining or declining pattern of the activity in any portion of the two cultivars at the end of the storage period. In both cultivars, branchlets showed higher SS and SPS activity than florets. Sucrose content gradually decreased in both portions of the two cultivars with time. Fructose content was higher than glucose and sucrose in the florets as well as branchlets of both cultivars. There was a highly significant negative correlation observed between the SS activity and sucrose content in the florets and branchlets of both cultivars. There was no significant correlation between sugar contents and SPS activity in any portions of both cultivars.
  Bimal Kumar Pramanik , Toshiyuki Matsui , Haruo Suzuki and Yusuke Kosugi
  This study investigated the changes in carbohydrate content and activities of invertase, sucrose synthase and sucrose phosphate synthase in two broccoli cultivar (Brassica oleracea L. Cvs. ‘Hartland’ and ‘Sairin’) stored at 5°C. Respiration rate rapidly declined after 1 day of storage and gradually decreased at the end of the storage period. Color did not change significantly at the end of the storage period. In both cultivars and portions, the invertase activity increased gradually at the end of the storage time. The acid invertase in cell wall-bound fraction (CWBF) showed a higher activity than that in soluble fraction (SF). Again, the branchlets showed a significantly higher invertase activity than that of florets. In both cultivars, sucrose synthase (SS) activity gradually increased in the florets with some fluctuations in the branchlets at the end of the storage time. Sucrose phosphate synthase activity (SPS) activity did not change markedly in any portion of the two cultivars at the end of the storage period. Sucrose content gradually decreased in both portions of the two cultivars with time. It was negatively correlated with the acid invertase and SS activities in both portions accounting well for the relation between the substrate and the activity. Fructose and glucose content were higher than sucrose in the florets as well as branchlets in both cultivars.
  Bimal Kumar Pramanik , Toshiyuki Matsui , Haruo Suzuki , Yusuke Kusugi and Matsuzaki Tomohiro
  This study investigated the seasonal fluctuations in invertase, sucrose synthase (SS) and sucrose phosphate synthase (SPS) activities and sugar and organic acid contents in the florets and branchlets of two broccoli cultivars ‘Hartland’ and ‘Sairin’ harvested from October to April. In both, cultivars and portions, invertase (soluble and cell wall-bound fraction) and SS activities were high in October thereafter decreasing until January and once again gradually increasing up to April. In both cultivars, there was no specific change in SPS activity throughout the harvest season but the activity was high in January. Organic acids (malic and citric) and sugar (specially, sucrose) concentrations increased from October to a maximum in January and again decreased up to April. However, no significant change was observed in glucose and fructose. There was a highly significant negative correlation observed between invertase and SS activities and sucrose content in the florets and branchlets of both cultivars. ‘Sairin’ showed higher invertase, SS and SPS activities in both florets and branchlets than ‘Hartland’.
  Bimal Kumar Pramanik , Toshiyuki Matsui , Haruo Suzuki and Yusuke Kosugi
  Changes in acid invertase activity and sugar distribution were studied during postharvest senescence of broccoli (Brassica oleracea L. cvs. ‘Hartland’ and ‘Sairin’) stored at 20°C. Broccoli head began to degreen after 3 days of storage and the degree of yellowing gradually increased at the end of the storage period. Respiration rate decreased markedly during the first 24 h of postharvest storage and increased slightly thereafter. In both cultivars and portions, the invertase activity increased gradually at the end of the storage time. The acid invertase in cell wall-bound fraction (CWBF) showed a higher activity than that in soluble fraction (SF). Again, the branchlets showed a significantly higher invertase activity than that of florets. Of the two cultivars, ‘Sairin’ showed a higher invertase activity in both portions. Sucrose content gradually decreased in both portions of the two cultivars with time. It was negatively correlated with the acid invertase activity in both portions accounting well for the relation between the substrate and the activity. Fructose content was higher than glucose and sucrose in the florets as well as branchlets in both cultivars. Comparing the two cultivars, ‘Sairin’ showed higher enzyme activities, sugar content and respiration rate than ‘Hartland’.
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility