The effect of saturated and unsaturated fatty acids on sweet potato starch and sweet potato starch-based films was studied. Three fatty acids varying in degree of unsaturation were used in the preparation of sweet potato starch-based films; i.e. stearic acid (C18:0), oleic acid (C18:1) and linoleic acid (C18:2). The stearic acid is more strongly bound with amylose than oleic acid and linoleic acid. In differential scanning calorimetry thermograms, both of the sweet potato starch-saturated fatty acid and sweet potato starch-unsaturated fatty acid composites exhibited the melting peak of amylose-lipid complex. The amylose-linoleic acid complex peak was unapparent compared with stearic acid and oleic acid. X-ray diffraction showed that the scattering intensity of amylose-lipid complex decreased with increasing unsaturation. Scanning electronic microscope indicated that the surface of the films became smooth after addition of fatty acids. The sweet potato starch-saturated fatty acid composites films exhibited higher tensile strength, lower elongation at break and lower water vapor permeability than those of the sweet potato starch-unsaturated fatty acid composite films.
Food Hydrocolloids – Elsevier
Published: Dec 1, 2016
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera