Here ya go boys:
-What it is:
Phaseolamin is a generic name for a proteinaceous inhibitor of the enzyme alpha- amylase that is made from white beans.
-The verdict:
Science 28 January 1983:
Vol. 219 no. 4583 pp. 393-395
DOI: 10.1126/science.6184780
A bean alpha-amylase inhibitor formulation (starch blocker) is ineffective in man
GL Carlson, BU Li, P Bass and WA Olsen
Abstract
A commercial alpha-amylase inhibitor with potent inhibitory activity in vitro was used in a randomized double-blind, cross-over clinical trial in six nonobese, healthy adult males. In these subjects, this inhibitor had no effect on the response of blood glucose, insulin, or breath hydrogen to a standardized starch meal. It is concluded that this formulation has no effect on starch digestion in humans.
-And more recently, but you gotta buy it if you are interested:
Determination of α-amylase inhibitor activity of phaseolamin from kidney bean (Phaseolus vulgaris) in dietary supplements by HPAEC-PAD
Maurizio Moscaa, Concetta Boniglia, a, , Brunella Carratùa, Stefania Giammariolia, Valentina Neraa and Elisabetta Sanzinia
aNational Center for Food Quality and Risk Assessment – Istituto Superiore di Sanità, viale Regina Elena 299, 00161 Rome, Italy
Received 12 November 2007; revised 21 December 2007; accepted 22 December 2007. Available online 1 February 2008.