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Red Guava Leaf Harvesting Impact on Flavonoid Optimation in Different Growth Phases

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Thursday, 07 July 2011 04:11
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JOURNAL 2011
Red Guava Leaf Harvesting Impact on Flavonoid Optimation in Different Growth Phases

Please use this identifier to cite or link to this item
http://biofarmaka.ipb.ac.id/publication/journal/67-red-guava-leaf-harvesting-impact-on-flavonoid-optimation-in-different-growth-phases
Title  : 

Red Guava Leaf Harvesting Impact on Flavonoid Optimation in Different Growth Phases
Authors
 :  Sandra Arifin Aziz1∗ & Munif Ghulamahdi1
Corporate

 		 :

 

1Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University, Kampus Darmaga, Bogor 16680, Indonesia
*Email: This email address is being protected from spambots. You need JavaScript enabled to view it.  
Issue Date : June 2011
Publisher : HAYATI Journal of Biosciences
Series / Report No :
 		 EISSN: 2086-4094
 
Physical Description :
 		 2011 Vol. 18 No. 2, p 97-102
 
Language : en
Abstract


















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 		 Harvesting process is a critical time to identify the quality of raw material for traditional medicine. The time and harvesting techniques, drying process after harvesting, and processing to make the simplicia, are the crucial role to make the good quality of the natural product. On the other hand, there is a lack of general understanding and appreciation about the processes involved in governing shoot and tree growth and development, i.e. red guava. The research objective was to evaluate the influence of leaf harvesting and growth phases on red guava for flavonoid production as antioxidant. Randomized factorial block design in time were laid out with two factors and followed by Duncan’s multiple range test. The treatments were the amount of leaf harvested on tertiary branches (0, 25, 50, and 100%) and growth phases of the plant (vegetative and generative). Leaf harvesting 25% on tertiary branches significantly increased the leaf number (766.3 tree-1) and the number of new quarternary branches, decreasing leaf area index (LAI) and leaf dry weight at the end of the experiment (22 weeks of observation/WO). The highest leaf dry weight (156.94 g tree-1) and LAI (0.47) was found in harvesting 25% tertiary branches. Harvesting 100% leaf on tertiary branches in vegetative phase significantly produced the lowest flavonoid production (7.82 g tree-1). The result suggested that flavonoid production from red guava leaves should be done by harvesting 50% leaf on tertiary branches in generative phase can be used to produce the highest flavonoid (89.90 g tree-1).
Source url
 		 :
 

http://biofarmaka.ipb.ac.id/publication/journal/67-red-guava-leaf-harvesting-impact-on-flavonoid-optimation-in-different-growth-phases
Mesh :

 
Keywords  :  red guava, leaf flavonoid, growth phases, harvest
How to cite this article
 		 :


 		 Aziz, S.A., & M. Ghulamahdi, 2011. Red Guava Leaf Harvesting Impact on Flavonoid Optimation in Different Growth Phases. HAYATI Journal of Biosciences, 18(2): 97-102. url: http://biofarmaka.ipb.ac.id/publication/journal/67-red-guava-leaf-harvesting-impact-on-flavonoid-optimation-in-different-growth-phases
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