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Effect of gamma irradiation on the physicochemical and morphological properties of starch extracted from lotus stem harvested from Dal lake of Jammu and Kashmir, India

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Starch isolated from lotus stem was treated by gamma-irradiation at different doses of 5,10 and 20 kGy. Physicochemical, morphological and pasting properties of irradiated lotus stem starches were investigated and these properties differed significantly. Carboxyl content, water absorption capacity, amylose leaching, and transmittance increased, whereas swelling power, apparent amylose content, syneresis, and pasting properties decreased after the modification in a dose dependent manner. Observation under scanning electron microscope (SEM) showed that some of
the starch granules were destroyed by gamma-irradiation and the breakage was much greater at a higher dose (20 kGy). X-ray diffraction pattern remained the same upon irradiation but a dose dependent decrease in relative crystallinity was observed.

KEYWORDS
Lotus stem starch;Gamma-irradiation;Physicochemical properties;Pasting properties;Morphological properties

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Ketersediaan

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Informasi Detail

Judul Seri

Journal of the Saudi Society of Agricultural Sciences

No. Panggil

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Penerbit

: King Saud University., 2013

Deskripsi Fisik

Journal of the Saudi Society of Agricultural Sciences (2013) 12, 109–115

Bahasa

English

ISBN/ISSN

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Klasifikasi

NONE

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

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