title: Nutritional assessment of a jackfruit (Artocarpus heterophyllus) meal.
abstract: OBJECTIVE
  The mature jackfruit (Artocarpus heterophyllus) is consumed in Sri Lanka either as a main meal or a meal accompaniment. However, there is no scientific data on the nutrient compositions of cooked jackfruit meals. Thus, the objective of the study was to carry out a nutritional assessment of a composite jackfruit breakfast meal comprising seeds and flesh.
  
  
  METHODS
  A jackfruit meal comprising of flesh (80% available carbohydrate) and seeds (20% available carbohydrate) was included in the study. The study was carried out in a random cross over design. Setting University of Sri Jayewardenepura. Study participants Healthy individuals (n=10, age: 20-30 yrs).
  
  
  METHODS
  The macronutrient contents, rapidly and slowly available glucose (SAG) contents, water solubility index of the jackfruit meal were determined according to standard methods. The GI of the meal was calculated according to FAO/WHO guidelines.
  
  
  RESULTS
  The moisture content of the boiled jackfruit flesh was high (82% FW). Jack seeds contained 4.7% protein (FW), 11.1% total dietary fibre (FW) and 8% resistant starch (FW). Jackfruit meal elicited a GI of 75. The Glycaemic Load (GL) of the normal serving size of the meal is medium. The slowly available glucose (SAG) percentage of jackfruit meal (30%) was twice that of the standard. The boiled jackfruit flesh contained disintegrated starch granules while seeds contained intact swollen and disintegrated granules.
  
  
  CONCLUSIONS
  The jackfruit seeds are a good source of starch (22%) and dietary fibre. The meal is categorized as a low GI meal. The low GI could be dueto the collective contributions from dietary fibre, slowly available glucose and un-gelatinised (intact) starch granules in the seeds.
authors.affiliation: Department of Biochemistry, Faculty of Medical Sciences, University of Sri Jayewardenepura, Sri Lanka.
authors.forename: U P K
authors.initials: UP
authors.lastname: Hettiaratchi
authors.forename: S
authors.initials: S
authors.lastname: Ekanayake
authors.forename: J
authors.initials: J
authors.lastname: Welihinda
mesh_terms: D000328:Adult; D031622:Artocarpus / Q000737:chemistry*; D004040:Dietary Carbohydrates / Q000032:analysis; D004043:Dietary Fiber / Q000032:analysis; D038321:Glycemic Index; D006801:Humans; D009753:Nutritive Value; D019518:Postprandial Period; D012639:Seeds / Q000737:chemistry; D013213:Starch / Q000032:analysis; D055815:Young Adult
chemical_list: D004040:Dietary Carbohydrates; D004043:Dietary Fiber; D013213:Starch