Sericin was obtained from Bombyx mori cocoons in 28% yield with 92.06% purity. Its hydrolysate was produced by an enzymatic method. A fraction with molecular mass < 3 kDa was collected using ultrafiltration. The contents of 19 peptides with molecular masses in the range 600–3000 Da were determined using MALDI TOF/TOF. Their amino-acid sequences were found. The antioxidant activity of sericin hydrolysate (IC50) was 0.07 mg/mL according to absorption of ABTS radicals and 1.09 mg/mL according to absorption of OH radicals. These were 4.5 and 1.2 times greater, respectively, than that of sericin.
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Acknowledgment
The work was supported by the Natural Science Foundation of Xinjiang-Uyghur Autonomous Region, China (Grant No. 2019D01A94). We also thank Project No. 2019VBA0013 of the PIFI Foundation, CAS.
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Translated from Khimiya Prirodnykh Soedinenii, No. 2, March–April, 2021, pp. 295–298.
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Wubulikasimu, A., Omar, A., Gao, Y. et al. Antioxidant Hydrolysate of Sericin from Bombyx mori Cocoons. Chem Nat Compd 57, 346–349 (2021). https://doi.org/10.1007/s10600-021-03348-4
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DOI: https://doi.org/10.1007/s10600-021-03348-4