Abstract no : 2-1&2-BK-009
Author(s) : Murthy, C.T.; Krishnamurthy, N.; Ramesh, T.; Rao, P.N.S.
Address : Department of Food Engineering, Central Food Technological Research Institute, Mysore 570 013, Karnataka, India
Source : Journal of Food Science and Technology, v. 33(4): p.299-301, 1996.
Title : EFFECT OF GRINDING METHODS ON THE RETENTION OF BLACK PEPPER VOLATILES.
Abstract : Piper nigrum (MARICAM) was ground at four different feed temperatures viz. 40 degree C, ambient (24 degreeC), 10 degree C and-120 degree C, using hot or chilled water circulation through the grinder jacket or direct injection of liquid nitrogen (LN2) into the mill along with the feed. The volatile oil content of the product indicated that chilled water and LN2 cooled conditions retained almost same quanity of voaltiles (e.56 ml/100 g and 3.60 ml/100g, respectively) and powder fineness was greater in the case of the latter. The gas chromatographic analysis of the oils showed higher retention of monoterpenes under cryogenic (LN2) and low temperture (chilled water) grinding conditions than under ambient and high temperature grinding conditions.
Author(s) : Murthy, C.T.; Krishnamurthy, N.; Ramesh, T.; Rao, P.N.S.
Address : Department of Food Engineering, Central Food Technological Research Institute, Mysore 570 013, Karnataka, India
Source : Journal of Food Science and Technology, v. 33(4): p.299-301, 1996.
Title : EFFECT OF GRINDING METHODS ON THE RETENTION OF BLACK PEPPER VOLATILES.
Abstract : Piper nigrum (MARICAM) was ground at four different feed temperatures viz. 40 degree C, ambient (24 degreeC), 10 degree C and-120 degree C, using hot or chilled water circulation through the grinder jacket or direct injection of liquid nitrogen (LN2) into the mill along with the feed. The volatile oil content of the product indicated that chilled water and LN2 cooled conditions retained almost same quanity of voaltiles (e.56 ml/100 g and 3.60 ml/100g, respectively) and powder fineness was greater in the case of the latter. The gas chromatographic analysis of the oils showed higher retention of monoterpenes under cryogenic (LN2) and low temperture (chilled water) grinding conditions than under ambient and high temperature grinding conditions.
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