Proximate Composition, Mineral Profile and Trypsin-Inhibitory Activity of West African Leafy Vegetables: Influence of Urea Micro-Dosing and Harvest Time
In order to ensure the nutritional quality of leafy vegetables produced under intensive cultivation systems, the proximate composition, mineral profile, and trypsin-inhibitory activity of three priority West African vegetable species ( Amaranthus cruentus, Ocimum gratissimum , and Solanum macrocarp...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences
2020-04-01
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| Series: | Polish Journal of Food and Nutrition Sciences |
| Subjects: | |
| Online Access: | http://www.journalssystem.com/pjfns/Proximate-composition-mineral-profile-and-trypsin-inhibitory-activity-of-West-African,119674,0,2.html |
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| Summary: | In order to ensure the nutritional quality of leafy vegetables produced under intensive cultivation systems, the proximate composition, mineral profile, and trypsin-inhibitory activity of three priority West African vegetable species ( Amaranthus cruentus, Ocimum gratissimum , and Solanum macrocarpon ) produced with urea micro-doses (20, 40, and 60 kg/ha) were compared with control leaves raised without urea. Plants were harvested three consecutive times to determine effects on nutrient and trypsin-inhibitory activity. Proximate and mineral compositions were mainly species-dependent (p<0.05) though the 60 kg/ha urea dose produced the significantly (p<0.05) highest moisture content in leaves. Calcium, copper, iron, and zinc contents were significantly (p<0.05) influenced by harvest time and its interaction with vegetable species. Furthermore, trypsin inhibition was significantly (p<0.05) higher for the second and third leaf harvests, which suggests that initial wounding from the first harvest enhanced synthesis of the inhibitor protein molecules |
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| ISSN: | 2083-6007 |