A combined methodology to detect gamma-irradiated white sesame seeds and evaluate the effects on fat content, physicochemical properties and protein allergenicity

A combined methodology to detect gamma-irradiated white sesame seeds and evaluate the effects on fat content, physicochemical properties and protein allergenicity

URI: https://www.openarchives.gr/aggregator-openarchives/edm/helios/000024-10442_12396
RDF/XML JSON-LD

This item is provided by the institution :
National Hellenic Research Foundation (NHRF)

Repository :
Helios - Repository of the National Hellenic Research Foundation (NHRF) | repositories EKT

see the original item page
in the repository's web site and access all digital files if the item^*

Title

A combined methodology to detect gamma-irradiated white sesame seeds and evaluate the effects on fat content, physicochemical properties and protein allergenicity

Creator

Miniadis-Meimaroglou, Sofia

Sinanoglou, Vassiha J.

Sflomos, Konstantinos

Batrinou, Anthimia

Strati, Irini F.

Description

White sesame seeds (Sesamum indicum L) were studied with the purpose to evaluate gamma-irradiation effect at 2.5, 5.0 and 10.0 kGy on lipid and fatty acid content, colour and protein allergenicity and to identify whether sesame oil was extracted from irradiated seeds by using High Resolution Nuclear Magnetic Resonance spectroscopy (HR-NMR). The fat decreased significantly, whereas triglyceride and phospholipid content was significantly decreased by the increase of irradiation dose. Monounsaturated and polyunsaturated fatty acids and unsaturated/saturated fatty acids ratio decreased. The presence of radiolytic decomposition products, shown by NMR, formed after a 2.5 kGy dose, confirmed that the lipid content decrease was a result of the irradiation process. The allergenicity of storage seed proteins was not significantly affected by irradiation up to 10.0 kGy. Colour parameter a increased after 5.0 kGy, while I: values decreased significantly after 2.5 kGy. Conclusively, irradiation could be applied at doses <2.5 kGy while sustaining the sesame seed nutritional benefits.

Type

Article