Journal of Scientific and Industrial Research

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Change in Phytochemicals and Antioxidant Activity of Silk, Husk and Cob of Baby Corn (Zea mays L.) during Four Phenological Stages


Affiliations
1 ICAR-Central Island Agricultural Research Institute, Port Blair 744 101 ICAR- Central Institute for Women in Agriculture, Bhubaneswar 751 003, India
2 Post Harvest Process and Food Engineering, College of Agriculture, Jawaharlal Nehru Agricultural University, Tikamgarh, Madhya Pradesh 472 001, India
3 ICAR- Indian Agricultural Research Institute, New Delhi 110 012, India
4 ICAR-Indian Institute of Maize Research, New Delhi 110 012, India
5 ICAR- Central Institute for Women in Agriculture, Bhubaneswar 751 003, India
6 ICAR-Central Island Agricultural Research Institute, Port Blair 744 101

Baby corn (Zea mays L.) is an emerging vegetable crop having a rich profile of functional elements and its widespread use in the food sector for its delicious taste and health benefiting properties. The present investigation analyzed three parts of baby corn, viz. silk, cob and husk, at four developmental/maturity stages on the basis of cob size: stage-1 (5.0–7.0 cm; S1), stage-2 (7.1–9.0; S2), stage-3 (9.1–11.0 cm; S3) and stage-4 (11.1–13.0 cm; S4). Xanthophylls and total carotenoid content showed significant (p<0.05) difference whereas, increase in β-carotene and chlorophyll was observed from S1 to S3. The phenolic content increased in silk (upto S3) whereas decreasing trend was observed in corn husk extract. Flavonoid content increased by 70.92, 219.8, and 104.2% in silk, 95.4, 241.4 and 290.24% in husk, whereas cob showed reduction of 26.3, 30.0, 40.0% from S2 to S4 over S1, respectively. All extracts showed strong radical scavenging activity, β-carotene linoleate and SOD activity. The study highlights functional attributes of baby corn cob for human consumption viz a viz husk portion for industrial use in functional food items.

Keywords

Baby corn, Phenolic content, DPPH activity, β-carotene, Principal component analysis
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  • Change in Phytochemicals and Antioxidant Activity of Silk, Husk and Cob of Baby Corn (Zea mays L.) during Four Phenological Stages

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Authors

Sachidananda Swain
ICAR-Central Island Agricultural Research Institute, Port Blair 744 101 ICAR- Central Institute for Women in Agriculture, Bhubaneswar 751 003, India
Lalit M Bal
Post Harvest Process and Food Engineering, College of Agriculture, Jawaharlal Nehru Agricultural University, Tikamgarh, Madhya Pradesh 472 001, India
Shrawan Singh
ICAR- Indian Agricultural Research Institute, New Delhi 110 012, India
Naresh Kumar
ICAR-Indian Institute of Maize Research, New Delhi 110 012, India
Mridula Devi
ICAR- Central Institute for Women in Agriculture, Bhubaneswar 751 003, India

ICAR-Central Island Agricultural Research Institute, Port Blair 744 101

Abstract


Baby corn (Zea mays L.) is an emerging vegetable crop having a rich profile of functional elements and its widespread use in the food sector for its delicious taste and health benefiting properties. The present investigation analyzed three parts of baby corn, viz. silk, cob and husk, at four developmental/maturity stages on the basis of cob size: stage-1 (5.0–7.0 cm; S1), stage-2 (7.1–9.0; S2), stage-3 (9.1–11.0 cm; S3) and stage-4 (11.1–13.0 cm; S4). Xanthophylls and total carotenoid content showed significant (p<0.05) difference whereas, increase in β-carotene and chlorophyll was observed from S1 to S3. The phenolic content increased in silk (upto S3) whereas decreasing trend was observed in corn husk extract. Flavonoid content increased by 70.92, 219.8, and 104.2% in silk, 95.4, 241.4 and 290.24% in husk, whereas cob showed reduction of 26.3, 30.0, 40.0% from S2 to S4 over S1, respectively. All extracts showed strong radical scavenging activity, β-carotene linoleate and SOD activity. The study highlights functional attributes of baby corn cob for human consumption viz a viz husk portion for industrial use in functional food items.

Keywords


Baby corn, Phenolic content, DPPH activity, β-carotene, Principal component analysis