- Purification, characterization, and complete amino acid sequence of a trypsin inhibitor from amaranth (Amaranthus hypochondriacus) seeds. Valdes-Rodriguez, S., Segura-Nieto, M., Chagolla-Lopez, A., Verver y Vargas-Cortina, A., Martinez-Gallardo, N., Blanco-Labra, A. Plant Physiol. (1993)