Microscopic observation and characterization of the oil bridge between dehulled-roasted sesame seeds.
The formation of an oil bridge between adhesive seeds was observed microscopically. The geometry of the oil bridge was affected by the shape of the adhesive seeds. The capillary force of the oil bridge was estimated from the image captured by the microscope. The average capillary force was 127 microN, which was five times higher than the average gravity of the seeds. It was observed that several oil bridges formed between two seeds. These results indicated an adequate ability of the seeds to adhere. The capillary force of the oil bridge increased with surface oil content. The probability of formation of an oil bridge increased with surface oil content when the surface oil content was above 0.63%. The probability of formation of an oil bridge markedly increased when sucrose was added to the seeds.
Takenaka
Nakako
N
Department of Science of Biological Resources, The United Graduate School of Agricultural Science, Gifu University, 1-1 Yanagido, Gifu, Gifu 501-1193, Japan.
Iwamoto
Satoshi
S
Yabe
Tomio
T
Yamauchi
Ryo
R
Ogata
Kenji
K
Kato
Koji
K
D018613:Microscopy, Confocal / Q000379:methods; D008954:Models, Biological; D012639:Seeds / Q000737:chemistry*; D012715:Sesame Oil / Q000737:chemistry*; D031685:Sesamum / Q000737:chemistry*
D012715:Sesame Oil