Fish Processing

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Browsing Fish Processing by Author "A. A. Zynudheen"

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    Photo-protective effect of cuttlefish ink melanin onhuman hair
    (Wiley, 2021-08-07) P. K. Binsi; P. Muhamed Ashraf; U. Parvathy; A. A. Zynudheen
    The photoprotective properties of exogenous melanin extracted from cuttlefishink on human hair was assessed. Melanin extracted from cuttlefish ink wasapplied on black hair and irradiated using a solar simulator. The extent ofphotodegradation was determined by microstructural, morphological andmechanical testing. The UV–Vis spectra of melanin extracted from cuttlefishink indicated strong absorption at UV region and moderate absorption in visi-ble region. The melanin-coated samples indicated significant protection to haircuticle against UV radiations, as indicated by microscopic images (SEM). Con-versely, visible cracks were evident on uncoated hair shafts, when exposed toUV-radiations. Also, the melanin-coated hair samples indicated negligiblealterations in disulfide linkages, free sulfhydryl group content, water retentionindex and swelling index on UV exposure, as compared to that of uncoatedsamples. Similarly, the mechanical strength of the uncoated hair fibers was farcompromised by UV irradiation compared to that of melanin-coated hairfibers. The observations of the present study postulate cuttlefish melanin as apotential photoprotective agent in hair-care formulations, which is otherwiseconsidered as a process discard from cephalopod processing industry.