Oxalic acid in unconventional food plants – UFP: Scoping review protocol
DOI:
https://doi.org/10.33448/rsd-v14i7.49150Keywords:
Oxalic Acid, Oxalates, Plants Edible, PANC, Scoping Review.Abstract
Unconventional Food Plants (UFP) are species with food potential that, although present in various regions, are still little known and consumed by the population. These plants can contribute to Food and Nutrition Security (FNS) due to their nutritional and functional properties. However, some UFP contain antinutritional factors, such as calcium oxalate, which can compromise the bioavailability of nutrients and pose health risks, such as the formation of kidney stones and gastrointestinal toxicity. In this context, the present protocol aims to verify the presence and oxalic acid in different genera or species of UFP and assess the safety of consumption. The search will be carried out in the databases BVS, PubMed, Embase, FSTA, Science Direct, Scopus, Web of Science, Google Scholar and grey literature (Open Grey, DART-Europe), with no restriction on date or language, including studies in Portuguese, English and Spanish. Two independent reviewers will screen the studies, and divergences will be resolved by a third. The extracted data will be organized in tables, evaluated, the oxalate: calcium ratio calculated, discussed in terms of risk and safe recommendation for oxalate intake. It is expected that this review may contribute to scientific knowledge about oxalate levels in UFP and support safe utilization strategies of these Genera and species in human nutrition.
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