It was confirmed that the elastic properties of konjac were satisfactorily estimated by application of the Okada-type's jelly strength tester. They were measured under the following conditions; the velocities of turning drum and falling water were 8 cm/min and 130 g/min respectively, and the plunger of 0.5 cm in diameter was used. On the other hand, the elastic properties of various sorts of konjac were examined by fifteen professional panel members with a view to know their likes and dislikes on konjac. Thus, the following results were obtained.
(1) The elastic properties are well represented with jelly strength, sunken length, softness, crispness and modulus of respitution.
(2) The elastic properties are greatly infulenced by the quality and the concentration of konjac powder used as raw material, and various conditions of cooking, etc.
(3) There is the exponential relationship, F =kS
n, between jelly strength (F) and softness (S).
(4) As the result of the investigation of their taste, konjac, for example, whose jelly strength is more than 80 g and whose softness is 0.25-0.50 mm/g, is congenial to their taste.
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