GDL

Indonesian National Standard for pummelo currently is not available yet. Pummelo variety Nambangan is an Indonesia's improved pummelo which is produced and marketed post. This paper aim at assessing the quality of pummelo variety Nambangan to serve as a basis for developing Indonesian National Standard of pummelo and as a guidelines for quality oriented pummelo production. This assessment was conducted at 10 Magetan District pummelo farms and at Indonesian Citrus and Subtropical Fruits Research Institute. Physical properties of pummelo fruits, such as fruit weigh, diameter, variety characters similarity and organoleptic properties according to market requirements were observed in addition to secondary data collected from merchants, Magetan Pummelos Accociation, exporters and corresponding quality standards form Codex Alimentarius Commision. The results indicated that Nambangan pummelo which comply with market requirements are its sweet and sour taste, TSS value > 10 Brix, less seed or even seedless in some cases and pink to red pulp colour. Despite good taste quality, its fruit physical appearance was still highly varied therefore its improvement is definitely required. Some quality variables that deserve a serious attention are skin defect which is till to high i.e. 10-40% as compared to only 11,4% of export and retail standards, and fruit weight which range from 700-2400 g with the average of 1262 g. The modus (highest proportion of fruit weight i.e. 24% of them) was laid between 1000-1300 g which fall in Grade C or Small of Magetan Pummelo Association Standard. The areas of improvement could be fruit production techniques particularly fertilizer application, fruit thinning and optimum harvest time determination.

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