Fig. 1

SDS-PAGE of THP subjected to gastrointestinal digestion without pepsin (THP) or with peptic digestion at pH 2.0 (HP-p2) and pH 4.0 (HP-p4) on reducing SDS 15% polyacrylamide gel. Mr., molecular weight marker; none, intact THP or pepsin alone digests; α, T/α and T, THP or peptic hydrolysates digested with α-chymotrypsin alone, α-chymotrypsin with trypsin or trypsin alone, respectively