Dr Adama Kenneth Kennedy and Michael O. Afolayan, Kenneth K. Adama, Anthony Oberafo, Moses Omojola, Sunday Thomas   (Published 2014)

Dr Kenneth Kennedy
See Profile Page


Ginger (Zingiber officinale) roots were crushed and the starch extracted in order to determine its starch
composition and use in biomaterials development as hybrid composites. The physicochemical properties of the isolated
starch were then determined and compared with standard industrial maize starch. The starch was isolated using 1% w/v
sodium metabisulphite solution and the obtained starch was found to be a white, crystalline, non- hygroscopic powder with
yield of about 18%. The starch percentage solubility at 90?C was 1.87 with a swelling power of 11.07 and gelatinization
temperature of 78?C. It had a browning temperature of 243.5 – 248.2?C, charring temperature of 278.6 – 285.2?C, water
absorption capacity of 90%, pH of 6.54, foam and emulsion capacities of 2.5% and 5.7% respectively. XRD analysis of the
starch sample at 10?C – 100?C 2? angle showed the starch to be a polycrystalline organic polymer of
pharmaceutical/medicinal grade. The percentage composition of amylose to amylopectin was found to be in the ratio of 32%
to 68% with an orthorhombic crystal structure. The profile revealed peak positions at 2? positions of 11.2282?, 15.0054?,
17.0346?, 18.0121? and 22.8782? corresponding to a Full Width at Half Maximum (FWHM) (2?) of 0.7911?, 0.5274?,
0.4615?, 0.6593? and 0.5934? respectively. The spectral of the ginger starch sample corroborate with standard corn starch
which served as the reference with a quality score of 82%. Applicability in composite materials studies showed a high level of
compatibility as binder/filler materials within the matrix and fibre materials employed. Generally, the values obtained from
the characterization of ginger starch compared favourably with corn starch and showed that it has high potential for industrial
applications as biomaterials in composites, food, textile and pharmaceutical industries.

Item Type: Journal article(non-copyrighted)
Format: PDF document,   364.03 KB
Copyright: Creative Commons LicenseCreative Commons license
Keywords: Ginger, Starch, Physicochemical, XRD, Composites, Biomaterial
Department: Chemical Engineering
Field of Study: Engineering- Chemical
Uploaded By: Chukwuemeka Obasi Chijioke
Date Added: 12 Jan 2022 2:50am
Last Modified: 12 Jan 2022
Journal URL:

Google Docs     Print     Download