  The discovery of amino acids in meteorites has presented two clues to the
origin of their processing subsequent to their formation: a slight preference
for left-handedness in some of them, and isotopic anomalies in some of their
constituent atoms. In this article we present theoretical results from the
Supernova Neutrino Amino Acid Processing (SNAAP) model, which uses electron
anti-neutrinos and the magnetic fields from source objects such as supernovae
or colliding neutron stars to selectively destroy one amino acid chirality and
to create isotopic abundance shifts. For plausible magnetic fields and electron
anti-neutrino fluxes, non-zero, positive enantiomeric excesses, $ee$s, defined
to be the relative left/right asymmetry in an amino acid population, are
reviewed for two amino acids, and conditions are suggested that would produce
$ee>0$ for all of the $\alpha$-amino acids. The relatively high energy
anti-neutrinos that produce the $ee$s would inevitably also produce isotopic
anomalies. A nuclear reaction network was developed to describe the reactions
resulting from them and the nuclides in the meteorites. At similar
anti-neutrino fluxes, assumed recombination of the detritus from the
anti-neutrino interactions is shown to produce appreciable isotopic anomalies
in qualitative agreement with those observed for D/$^1$H and $^{15}$N/$^{14}$N.
The isotopic anomalies for $^{13}$C/$^{12}$C are predicted to be small, as are
also observed. Autocatalysis may be necessary for any model to produce the
largest $ee$s observed in meteorites. This allows the constraints of the
original SNAAP model to be relaxed, increasing the probability of meteoroid
survival in sites where amino acid processing is possible. These results have
obvious implications for the origin of life on Earth.
