Chymotrypsin inhibitor activity in winged beans (Psophocarpus tetragonolobus)
Chymotrypsin inhibitor activity of winged beans (Psophocarpus tetragonolobus) was investigated. Extractability of the inhibitors by aqueous solution increases with increasing pH. The chymotrypsin inhibitor activity in winged bean meal was extremely resistant to dry heat treatment. Prolonged boiling...
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| Format: | Article |
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American Chemical Society
1984
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| Online Access: | http://psasir.upm.edu.my/id/eprint/116147/ |
| _version_ | 1848866936307318784 |
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| author | Tan, Nget-Hong A. Rahim, Zubaidah Khor, Hun-Teik Wong, Kai-Choo |
| author_facet | Tan, Nget-Hong A. Rahim, Zubaidah Khor, Hun-Teik Wong, Kai-Choo |
| author_sort | Tan, Nget-Hong |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Chymotrypsin inhibitor activity of winged beans (Psophocarpus tetragonolobus) was investigated. Extractability of the inhibitors by aqueous solution increases with increasing pH. The chymotrypsin inhibitor activity in winged bean meal was extremely resistant to dry heat treatment. Prolonged boiling (60 min) of the bean was required to destroy the inhibitor activity. Autoclaving is more effective in destroying the chymotrypsin inhibitor activity in the bean meals: 20 min of autoclaving at 120 °C, 1.05 kg/cm2, generally destroyed more than 90% of the inhibitor activity. There are some varietal variations in the thermal stability of winged bean chymotrypsin inhibitor activity. The chymotrypsin inhibitor activity in the winged bean meal extract is heat labile. |
| first_indexed | 2025-11-15T14:28:31Z |
| format | Article |
| id | upm-116147 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T14:28:31Z |
| publishDate | 1984 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1161472025-03-20T07:50:07Z http://psasir.upm.edu.my/id/eprint/116147/ Chymotrypsin inhibitor activity in winged beans (Psophocarpus tetragonolobus) Tan, Nget-Hong A. Rahim, Zubaidah Khor, Hun-Teik Wong, Kai-Choo Chymotrypsin inhibitor activity of winged beans (Psophocarpus tetragonolobus) was investigated. Extractability of the inhibitors by aqueous solution increases with increasing pH. The chymotrypsin inhibitor activity in winged bean meal was extremely resistant to dry heat treatment. Prolonged boiling (60 min) of the bean was required to destroy the inhibitor activity. Autoclaving is more effective in destroying the chymotrypsin inhibitor activity in the bean meals: 20 min of autoclaving at 120 °C, 1.05 kg/cm2, generally destroyed more than 90% of the inhibitor activity. There are some varietal variations in the thermal stability of winged bean chymotrypsin inhibitor activity. The chymotrypsin inhibitor activity in the winged bean meal extract is heat labile. American Chemical Society 1984 Article PeerReviewed Tan, Nget-Hong and A. Rahim, Zubaidah and Khor, Hun-Teik and Wong, Kai-Choo (1984) Chymotrypsin inhibitor activity in winged beans (Psophocarpus tetragonolobus). Journal of Agricultural and Food Chemistry, 32 (1). pp. 163-166. ISSN 0021-8561; eISSN: 1520-5118 https://pubs.acs.org/doi/abs/10.1021/jf00121a038 10.1021/jf00121a038 |
| spellingShingle | Tan, Nget-Hong A. Rahim, Zubaidah Khor, Hun-Teik Wong, Kai-Choo Chymotrypsin inhibitor activity in winged beans (Psophocarpus tetragonolobus) |
| title | Chymotrypsin inhibitor activity in winged beans (Psophocarpus tetragonolobus) |
| title_full | Chymotrypsin inhibitor activity in winged beans (Psophocarpus tetragonolobus) |
| title_fullStr | Chymotrypsin inhibitor activity in winged beans (Psophocarpus tetragonolobus) |
| title_full_unstemmed | Chymotrypsin inhibitor activity in winged beans (Psophocarpus tetragonolobus) |
| title_short | Chymotrypsin inhibitor activity in winged beans (Psophocarpus tetragonolobus) |
| title_sort | chymotrypsin inhibitor activity in winged beans (psophocarpus tetragonolobus) |
| url | http://psasir.upm.edu.my/id/eprint/116147/ http://psasir.upm.edu.my/id/eprint/116147/ http://psasir.upm.edu.my/id/eprint/116147/ |