1659-1321 1659-1321 S1659-13212018000200375 10.15517/ma.v29i2.29546 Cuba Cuba Cuba Ecuador 00 08 2018 00 08 2018 29 2 375 387

2012 AOAC (Official Methods of Analysis) 2016 20 2012 1993 263-90 1989 15-20 2005 6 1 1 69-82 2008 48 21-7 1977 12 4 4 638 1985 2005 52 1850-60 2015 30 29-35 2016 27 1 1 39-44 2000 281-300 1983 34 1330-40 2007 2012 24 6 6 2014 2014 48 359-64 1971 54 1108-12 1999 2000 2003 37 189-91 1991 219 15-22 2009 43 39-44 2016 1980 143-57 1979 92 499-503 2014 2000 2007 2013 2010 2002 5 180-9 2016 50 639-48 1987 143-77 2007 2009 43 81-4 1970 42 3-22