Lihat Juga

• Xanthone in mangosteen fruit hull has antioxidant activities. The objective of this experiment was to determine xanthones content, physical and chemical characters, and antioxidant potentials of several groups of mangosteens qualities. The experiment was carried out in January until August 2008. The research used a randomized complete block design with four replications. The treatments were four physical fruit conditions: large size mangosteens (≥ 100 g), small size mangosteens (min. 50 g), yellow sap dotted fruits, and scabbed fruit. The parameters being observed were physical and chemical characteristics, xanthone content, and radical scavenging activity of mangosteen fruit hull extract. The results demonstrated that the physical condition of fruit significantly affected physical fruit hull characters and chemical fruit characters. Characters of fruit hull, thickness, fresh weight, and dry weight, differed among fruit qualities. The physical condition of fruit hull also significantly influenced total soluble solid and vitamin C content, but did not affect total titrable acid and degree of acidity of the fruits. Fruit hulls of all groups of mangosteen qualities had similar antioxidant properties with the IC50 valueof 5.57-6.11 ppm. Keywords: benzophenone, vitamin C, yellow sap, scab
  oleh: Kurniawati, Ani; Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University, Jl. Meranti Kampus IPB Darmaga 16680, Indonesia
• Pollen Viability and Pollen Tube Growth of IPB’s Papaya
  oleh: Suketi, Ketty; Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University, et al.
  Terbitan: (2016)
• Effect of Coating Materials and Storage Temperatures on Quality and Shelf Life of Papaya Fruit
  oleh: Purwoko, Bambang S., et al.
  Terbitan: (2010)
• Amorphophallus variabilisBlume, a member of Araceae, is a native tuber crop in Java, Madura and Kangean Islands, Indonesia. The plant showed high variations in morphology. However, genetic variations at molecular level have not been well studied. Amplified fragment length polymorphism (AFLP) was carried out using 8 primers combination of EcoRI and MseI on 78 accessions collected from 28 sites in Java, Indonesia. Results showed that AFLP markers able to generate polymorphism among accessions. A total of 220 polymorphisms were found. The differences among accessions at the genetic level were high, and 5 clusters were constructed. Grouping was independent of geographical origin, similar to clustering of morphological characteristic of flowers as in the previous report. Accessions from one site composed of one to four different cluster groups, showed that variation in single site was observed. Regarding conservation program of the A. variabilisin natural population, it is reasonable to protect one bigger site rather than many small sites, but it should be recommended to maintain conservation areas in several districts. Further study on population structure should be carried out to explain such variability. Keywords: genetic diversity, iles-iles, molecular marker, morphology, tuber crop
  oleh: Santosa, Edi; Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University
• The objective of this study was to evaluate the characteristics of mangosteen fruit’s hull, xanthone content, and antioxidant potential on various stadia of mangosteen fruit development. The experiment was conducted in September 2006 until July 2008 using randomized complete block design, with three replications at maturation stage i.e. 1, 2, 3, and 4 months after anthesis. The parameters being observed were fruit’s hull characters, xanthone content, and antioxidant capacity. The results of this study showed that fruit diameter and fruit weight increased until three months after anthesis and then did not change significantly once they entered the process of maturity. Thickness of fruit’s hull differed significantly among maturation stage. The thickness of fruit hull was observed at two months and the highest weight was at three months after anthesis. Xanthone content of mangosteen fruit’s hull at a month up to four months after anthesis did not differ significantly however capacity of antioxidant differed significantly among fruit ages, the IC50 values increased with the increase of fruit maturation. Keywords: Antioxidant, fruit growth, fruit’s hull, mangosteen, xanthone
  oleh: Kurniawati, Ani; Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University, Jl. Meranti, Kampus IPB Darmaga 16680, Indonesia