title: Konjac glucomannan as a carrier material for time--temperature integrator.
abstract: Hardness, springiness and water retention of konjac glucomannan gel (g-KGM) as a novel carrier material for time-temperature integrator (TTI) in aseptic processing were determined and compared with those of sodium alginate gel (g-SA). Hardness of both g-KGM and g-SA increased with temperature: values of g-SA were significantly higher (p < 0.05) than those of g-KGM at all temperatures. No significant difference in springiness between g-KGM and g-SA from 40 °C to 90 °C and significant differences (p < 0.05) between 100 °C and 140 °C were found. Water retention property of g-KGM was lower than that of g-SA between 60 °C and 100 °C, but much higher between 100 °C and 140 °C. Heat transfer tests performed on g-KGM alone as well as on g-KGM as a carrier, embedded with TTI, α-amylase as an integrator, indicated that g-KGM was suitable for industrial ultrahigh temperature sterilization test.
authors.affiliation: The State Key Lab of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
authors.forename: JinPeng
authors.initials: J
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Deng
authors.forename: Yin
authors.initials: Y
authors.lastname: Li
authors.forename: X
authors.initials: X
authors.lastname: Xu
authors.forename: Yi
authors.initials: Y
authors.lastname: Gao
authors.forename: Nahimana
authors.initials: N
authors.lastname: Hilaire
authors.forename: H
authors.initials: H
authors.lastname: Chen
authors.forename: Z
authors.initials: Z
authors.lastname: Jin
authors.forename: Jin Moon
authors.initials: JM
authors.lastname: Kim
authors.forename: LiFeng
authors.initials: L
authors.lastname: He
mesh_terms: D000464:Alginates / Q000737:chemistry; D055598:Chemical Phenomena; D004795:Enzyme Stability; D005782:Gels / Q000737:chemistry*; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D006358:Hot Temperature; D008351:Mannans / Q000737:chemistry*; D013997:Time Factors; D000516:alpha-Amylases / Q000378:metabolism*
chemical_list: D000464:Alginates; D005782:Gels; D006603:Hexuronic Acids; D008351:Mannans; C022901:(1-6)-alpha-glucomannan; D020723:Glucuronic Acid; D000516:alpha-Amylases