Propiedades de la sericina de seda colombiana
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Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Corporación Universitaria Lasallista
Abstract
Introduction. During Colombian silk
transformation to obtain threads, a protein called
sericin is removed and discarded. Nevertheless,
due to its properties, it should be industrially
recovered and used. Objective. Characterize the
sericin obtained, through spray drying, from
Colombian silk threads. Materials and methods. The sericin was extracted using hot water in
autoclave and later spray-dried. Obtained solution
was dehydrated in dry spray equipment. The
obtained powdered sample was characterized by
morphological tests (SEM), isoelectric point and
protein content, antimicrobial activity, solubility,
aqueous activity (aw) and color. Results. The
results obtained by SEM showed that the
degumming process extracted the most of sericin
from the threads. In addition, it was seen that
dehydrated samples have a spherical shape, with
a rough, concave and collapsed surface. The
protein content and the isoelectric point of sericin
were 99.5 % and 4.07, respectively. No
antimicrobial properties were observed against the
microorganisms studied. The solubility of the
protein increased with temperature (44.11 % ± 5.75
at 90 °C), its aw was 0.287, and its color showed a
white trend whose CIELAB coordinates are L:
89.55 ± 0.20, a*: +0.44 ± 0.04 and b*: +5.16 ± 0.30.
Conclusions. The results show that it is possible
to extract sericin from silk threads using autoclave,
with high percentages of yield. Additionally, it was
observed that the sample is susceptible to be
dehydrated by spray drying, showing
characteristics that can be studied in greater depth
to evaluate the viability of using this protein in the
development of different products.
Description
Keywords
Corporación Universitaria Lasallista, Seda - Colombia, Sericina, Secado por aspersión, Hilos, Proteínas
Citation
Revista Lasallista de Investigación Vol. 15 N. 1