Abstract: Disclosed is a new fruit-juice-containing black tea beverage that, without performing enzyme treatment such as tannase treatment, and moreover even if a large quantity of fruit juice is added, can suppress time degradation. The fruit-juice-containing black tea beverage packed in a container containing 10-90 mass % of fruit juice is characterized by containing 10-24 ppm of theogallin, and by the ratio (theogallin/K) of contained theogallin to contained potassium being 0.015-0.100.

Abstract: Disclosed is a pleasantly mild new acidic black tea beverage in which bitter and astringent flavors are suppressed. The black tea beverage packed in a container contains sweeteners and fruit juice and 0.001 to 0.005 wt % caffeine, and is characterized by having acidity of 0.02 to 0.08%, and, when the acidity is within the aforementioned range, and a sweetness/dryness of 1.50 to 2.50, said sweetness/dryness being expressed using sweetness (total solids content) and acidity.

Abstract: Disclosed is a new fruit-juice-containing black tea beverage that, without performing enzyme treatment such as tannase treatment, and moreover even if a large quantity of fruit juice is added, can suppress time degradation. The fruit-juice-containing black tea beverage packed in a container containing 10-90 mass % of fruit juice is characterized by containing 10-24 ppm of theogallin, and by the ratio (theogallin/K) of contained theogallin to contained potassium being 0.015-0.100.

Abstract: The present invention provides a method for producing .epsilon.-caprolactam, which comprises subjecting cyclohexene to a hydration reaction to obtain cyclohexanol, subjecting the cyclohexanol to a dehydrogenation reaction to obtain cyclohexanone, subjecting the cyclohexanone to an oxime-forming reaction to obtain cyclohexanone oxime, and subjecting the cyclohexanone oxime to a Beckmann rearrangement reaction to obtain .epsilon.-caprolactam, wherein methylcyclopentanones contained in the cyclohexanone subjected to the oxime-forming reaction are controlled to be not more than 400 ppm.According to the present invention, it is possible to produce .epsilon.-caprolactam having a quality not inferior to conventional quality at a low cost.

Abstract: Cyclohexene is separated from a mixture of cyclohexene and at least one of cyclohexane and benzene by subjecting the mixture to extractive distillation in the presence of an extraction solvent the formula: ##STR1## wherein R.sup.1 and R.sup.2 each is a C.sub.1-10 alkyl group or hydrogen, and n is an integer of from 2-4, thereby preparing a fraction rich in cyclohexene.

Abstract: A method for preparing an oxime, which comprises partitioning an aqueous hydroxylamine salt solution phase and a ketone or aldehyde phase by a cation exchange membrane, and permitting hydroxylamine in the aqueous hydroxylamine salt solution phase to diffuse and transfer through the membrane to the ketone or aldehyde phase and to form an oxime in the ketone or aldehyde phase.