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Influence of dietary mulberry leaf on the nutritional composition of mulberry silkworm, Bombyx mori L. at different developmental stages

In: Journal of Insects as Food and Feed
Authors:
S. Pongworn Department of Agro-industrial, Food and Environmental Technology, Faculty of Applied Science, Food and Agro-Industrial Research Centre, King Mongkut’s University of Technology North Bangkok, 1518 Pracharat 1 Road, Bangsue, Bangkok 10800, Thailand

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https://orcid.org/0009-0003-2969-3808
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J. Wongsa Department of Agricultural Engineering for Industry, Faculty of Industrial Technology and Management, King Mongkut’s University of Technology North Bangkok, Prachinburi Campus, Prachinburi, 25230, Thailand

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https://orcid.org/0000-0002-8338-8893
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S. Vatanyoopaisarn Department of Agro-industrial, Food and Environmental Technology, Faculty of Applied Science, Food and Agro-Industrial Research Centre, King Mongkut’s University of Technology North Bangkok, 1518 Pracharat 1 Road, Bangsue, Bangkok 10800, Thailand

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https://orcid.org/0000-0002-1465-5839
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B. Thumthanaruk Department of Agro-industrial, Food and Environmental Technology, Faculty of Applied Science, Food and Agro-Industrial Research Centre, King Mongkut’s University of Technology North Bangkok, 1518 Pracharat 1 Road, Bangsue, Bangkok 10800, Thailand

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https://orcid.org/0000-0002-8511-5215
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D. Uttapap Division of Biochemical Technology, School of Bioresources and Technology, King Mongkut’s University of Technology Thonburi, Bangkhuntian, Bangkok, 10150, Thailand

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https://orcid.org/0000-0003-1928-9185
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B. Lamsal Food Science and Human Nutrition Department, Iowa State University, Ames, IA 50011-1054, USA

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https://orcid.org/0000-0002-7774-3406
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V. Rungsardthong Department of Agro-industrial, Food and Environmental Technology, Faculty of Applied Science, Food and Agro-Industrial Research Centre, King Mongkut’s University of Technology North Bangkok, 1518 Pracharat 1 Road, Bangsue, Bangkok 10800, Thailand

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https://orcid.org/0000-0003-4237-2673
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Abstract

The distribution of mulberry leaf nutrients and trace elements into silkworm larvae over its development into pupa was investigated for potential novel food applications. Four stages of chronologically collected silkworm larvae, fed with mulberry leaves, were sampled. Proximate composition, vitamin A, β-carotene, mineral, fatty, and amino acid profiles were analyzed. The highest protein content was 63.68% in the fourth instar, whereas lipid was markedly highest at 31.85% in pupa. Magnesium and potassium were found to exceed the Thai recommended daily intake standard (RDI) in almost all stages, except for the potassium in the pupa. Vitamin A in the third to fifth instar was also found to be more than Thai RDI. The distinct highest zinc and fatty acid content were detected in the pupa. Monounsaturated fatty acids were detected at the highest levels in all stages. Sulfur-containing amino acids were abundant in the fifth instar. The fourth instar, the fifth instar, and the pupa are recommended as sources of protein, amino acids, fatty acids, and lipids in developing suitable food products.

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