Abstract: A hydraulic supply device includes: a first oil pump configured to supply oil to a supply passage; a second oil pump driven together with the first oil pump or driven when the first oil pump is stopped; a first check valve provided in a first oil passage that allows a suction side of the second oil pump to communicate with an oil source, and configured to close the first oil passage when the second oil pump is stopped; a second check valve provided in a second oil passage that allows a discharge side of the second oil pump to communicate with the supply passage, and configured to close the second oil passage when the second oil pump is stopped; and a third oil passage into which the oil supplied to the supply passage flows, wherein the oil flowing into the third oil passage is used as an auxiliary pressure for operation of the second check valve when the second oil passage is closed.

Abstract: A process for producing a dried banana product having a crisp texture and good storage stability comprising:frying slices of fully ripe raw banana flesh in an edible oil as rapidly as possible after slicing while substantially maintaining a pressure of about 30 to about 60 Torr and a frying temperature of about 75.degree. to about 85.degree. C.;removing the banana flesh slices from the frying oil while still maintaining a pressure of about 30 to about 60 Torr;removing the excess frying oil adhering to the banana slices while still maintaining a pressure of about 30 to about 60 Torr; andthereafter restoring the pressure to atmospheric pressure. No anti-browning treatment is required.