Determination and evaluation of element bioaccessibility in some nuts and seeds by in-vitro gastro-intestinal method

Burcu Kafaoglu, Andrew Fisher, Steve Hill, Derya Kara*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

Element bioaccessibility in some nuts and seeds has been determined by performing a physiologically based extraction test. Nine elements (B, Ca, Co, Cu, Fe, Mn, Mg, Ni and Zn) in gastric and intestinal phase extractions of nuts and seeds were determined using inductively coupled plasma-atomic emission spectrometry and inductively coupled plasma-mass spectrometry. Hazelnuts, almonds, sunflower seeds, peanuts, cashew nuts, Brazil nuts, walnuts, chickpeas, pumpkin seeds and pistachio nuts were used as the materials in this study. The bioaccessible portions of magnesium and calcium were higher than for the other elements whereas B bioaccessibility was the lowest for each of the different types of nuts and seeds. Based on an ingestion rate of 10 g day−1, the amounts of B, Ca, Co, Cu, Fe, Mn, Mg, Ni and Zn from the nuts and seeds accessible to the body were found to be lower than the Tolerable Upper Intake Levels. The data were also subjected to chemometric evaluation using tools such as Principal Component Analysis (PCA) and Linear Discriminant Analyses (LDA) in an attempt to classify the nuts and seeds according to these elements bioaccessibility and to find out which elements are more bioaccessible in gastric and intestinal ingestions.
Original languageEnglish
Pages (from-to)58-65
Number of pages0
JournalJournal of Food Composition and Analysis
Volume45
Issue number0
DOIs
Publication statusPublished - 26 Sept 2015

Keywords

  • Bioaccessibility
  • Elements
  • Food analysis
  • Food composition
  • Linear discriminant analyses
  • Nuts and seeds
  • Principal component analysis

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