Toggle Main Menu Toggle Search

Open Access padlockePrints

Cyanogenic potential of fresh and frozen cassava on retail sale in three Irish cities: a snapshot survey

Lookup NU author(s): Dr Gerry O'BrienORCiD


Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Imported cassava roots can be found on retail sale in several Irish cities and towns. Fresh roots (n=36 roots) and peeled frozen root pieces (n=28 packs) were randomly purchased from five retailers in Belfast, Dublin and Limerick and assayed for cyanogenic potential (CNp). Total CNp of fresh root parenchyma varied from 37.5 to 242.9mgkg(-1) as HCN, dry weight basis - dwb), averaging 104.4mgkg(-1) HCN (dwb). Total CNp of frozen root parenchyma (n=28 packs) ranged from 28.5 to 258.6mgkg(-1) HCN (dwb), averaging 81.7mgkg(-1) HCN (dwb). Around 78% of fresh roots, and 93% of packs of frozen parenchyma, complied with the Codex Alimentarius definition of sweet' cassava, but most (86.1% and 64.3%, respectively) exceeded European Union NETTOX recommendations for total CNp. In around one-third of frozen parenchyma packs, nonglycosidic cyanogens accounted for 83-100% of total CNp. The toxicological implications are briefly discussed.

Publication metadata

Author(s): O'Brien GM, Weir RR, Moody K, Liu PWS

Publication type: Article

Publication status: Published

Journal: International Journal of Food Science & Technology

Year: 2013

Volume: 48

Issue: 9

Pages: 1815-1821

Print publication date: 15/05/2013

ISSN (print): 0950-5423

ISSN (electronic): 1365-2621

Publisher: Wiley-Blackwell Publishing Ltd.


DOI: 10.1111/ijfs.12155


Altmetrics provided by Altmetric