TY - JOUR
T1 - Comparative study on physicochemical properties of starch films prepared from five sweet potato (Ipomoea batatas) cultivars
AU - Song, Hong geon
AU - Choi, Inyoung
AU - Lee, Jung Soo
AU - Chung, Mi Nam
AU - Yoon, Chan Suk
AU - Han, Jaejoon
N1 - Funding Information:
This work was supported by “Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ01423304 )” Rural Development Administration , Republic of Korea.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/10/31
Y1 - 2021/10/31
N2 - Five different sweet potato (Ipomoea batatas) cultivars (Daeyumi, Gogeonmi, Sincheonmi [SCM], Singeonmi, and Sinyulmi [SYM]) were used to extract sweet potato starch (SPS) for developing starch-based films. After the chemical composition and amylose contents of all SPSs were evaluated, the morphological, moisture, mechanical, and barrier properties of the SPS-based films were investigated. As one of the film characteristics, the X-ray diffractograms revealed that the SCM-based film with the highest amylose content (26.34%) had the highest relative crystallinity (24.31%). The SCM-based film also showed higher tensile strength (3.05-fold) and elastic modulus (2.38-fold) than the SYM-based film with the lowest amylose content (21.84%). The water vapor and oxygen permeabilities of the SPS-based films were negatively correlated with the amylose content. Thus, the SCM-based film was less permeable for water vapor (3.16-fold) and oxygen (1.81-fold) than the SYM-based film. These results demonstrated that the sweet potato cultivar, especially the amylose content, plays a significant role in determining the physicochemical properties of the SPS-based films.
AB - Five different sweet potato (Ipomoea batatas) cultivars (Daeyumi, Gogeonmi, Sincheonmi [SCM], Singeonmi, and Sinyulmi [SYM]) were used to extract sweet potato starch (SPS) for developing starch-based films. After the chemical composition and amylose contents of all SPSs were evaluated, the morphological, moisture, mechanical, and barrier properties of the SPS-based films were investigated. As one of the film characteristics, the X-ray diffractograms revealed that the SCM-based film with the highest amylose content (26.34%) had the highest relative crystallinity (24.31%). The SCM-based film also showed higher tensile strength (3.05-fold) and elastic modulus (2.38-fold) than the SYM-based film with the lowest amylose content (21.84%). The water vapor and oxygen permeabilities of the SPS-based films were negatively correlated with the amylose content. Thus, the SCM-based film was less permeable for water vapor (3.16-fold) and oxygen (1.81-fold) than the SYM-based film. These results demonstrated that the sweet potato cultivar, especially the amylose content, plays a significant role in determining the physicochemical properties of the SPS-based films.
KW - Physicochemical properties
KW - Starch film
KW - Sweet potato cultivar
UR - http://www.scopus.com/inward/record.url?scp=85113911441&partnerID=8YFLogxK
U2 - 10.1016/j.ijbiomac.2021.08.106
DO - 10.1016/j.ijbiomac.2021.08.106
M3 - Article
C2 - 34419545
AN - SCOPUS:85113911441
SN - 0141-8130
VL - 189
SP - 758
EP - 767
JO - International Journal of Biological Macromolecules
JF - International Journal of Biological Macromolecules
ER -