Effect of H2O2 and pH on properties of myofibrillar proteins from Yak muscle during thermal gelation process

Qu, Sha; Sun, Dong; Hu, Ting; Hao, Gang

doi:10.1186/s13065-025-01434-0

BMC Chemistry

Table 4 Effects of H₂O₂ concentrations on the secondary structure of MP at different pHs(transmittance)

From: Effect of H₂O₂ and pH on properties of myofibrillar proteins from Yak muscle during thermal gelation process

H₂O₂(mmol/L)	β - Folding				No regular curl				α- Helix				β - corner
H₂O₂(mmol/L)	5	6	7	8	5	6	7	8	5	6	7	8	5	6	7	8
0	31.59 ± 0.83^Da	27.29 ± 0.94^Db	24.82 ± 0.48^Dc	26.55 ± 0.77^Dc	14.39 ± 0.08^Eab	15.60 ± 0.51^Eb	16.95 ± 1.08^Eab	13.72 ± 0.69^Ea	18.94 ± 0.66^Ac	20.28 ± 1.05^Ac	25.37 ± 1.32^Ab	24.14 ± 0.43^Aa	34.92 ± 0.65^Aa	34.21 ± 0.22^Aa	36.82 ± 1.05^Aa	34.41 ± 0.74^Ab
5	32.15 ± 0.31^DCa	30.00 ± 1.07^DCb	26.85 ± 0.54^DCc	27.64 ± 0.72^DCc	17.71 ± 1.02^Dab	16.63 ± 0.79^Db	17.97 ± 0.87^Dab	18.43 ± 0.60^Da	18.02 ± 0.17^Bc	18.73 ± 0.77^Bc	23.56 ± 0.90^Bb	22.79 ± 1.13^Ba	31.69 ± 0.64^Ba	32.96 ± 0.46^Ba	34.02 ± 0.73^Ba	30.69 ± 0.94^Bb
10	34.72 ± 0.95^BCa	30.91 ± 1.10^BCb	27.15 ± 0.19^BCc	28.55 ± 0.14BCc	18.13 ± 0.99^CDab	18.18 ± 0.50^CDb	18.14 ± 0.95^CDab	20.30 ± 1.79^CDa	17.82 ± 1.03^Cc	16.34 ± 1.09^Cc	22.94 ± 0.29^Cb	21.86 ± 0.61^Ca	31.64 ± 0.52^BCa	31.74 ± 1.04^BCa	33.13 ± 1.32^BCa	28.63 ± 0.56^BCb
15	35.13 ± 0.81^BCa	31.06 ± 0.50^BCb	27.53 ± 0.68^BCc	28.87 ± 0.46^BCc	19.26 ± 1.03^BCab	19.62 ± 0.73^BCb	20.02 ± 0.58^BCab	21.95 ± 1.94^BCa	16.77 ± 0.77^CDc	16.21 ± 0.55^CDc	21.55 ± 0.40^CDb	20.64 ± 0.57^CDa	31.23 ± 1.13^BCa	31.29 ± 0.37^BCa	32.15 ± 0.89^BCa	26.71 ± 0.38^BCb
20	35.52 ± 0.57^Ba	32.28 ± 1.13^Bb	28.39 ± 0.61^Bc	29.36 ± 0.22^Bc	20.61 ± 0.82^Bab	19.90 ± 1.05^Bb	20.55 ± 0.68^Bab	22.94 ± 0.11^Ba	15.48 ± 0.99^Dc	15.42 ± 0.45^Dc	21.02 ± 0.66^Db	19.83 ± 0.42^Da	30.39 ± 0.21^CDa	30.69 ± 0.49^CDa	31.69 ± 0.62^CDa	26.13 ± 0.87^CDb
40	36.98 ± 0.68^Aa	37.04 ± 0.15^Ab	29.02 ± 0.63^Ac	30.44 ± 0.49^Ac	22.59 ± 0.24^ABab	20.42 ± 0.66^ABb	21.25 ± 1.01^ABab	23.08 ± 0.91^ABa	14.41 ± 0.72^Ec	15.10 ± 0.91^Ec	20.27 ± 1.11^Eb	17.21 ± 1.21^Ea	29.77 ± 0.43^DEa	30.29 ± 0.72^DEa	27.30 ± 0.88^DEa	24.84 ± 0.99^DEb
60	39.22 ± 0.78^Aa	38.84 ± 0.62^Ab	30.95 ± 0.78^Ac	31.05 ± 0.64^Ac	26.64 ± 0.05^Aab	21.55 ± 0.54^Ab	22.44 ± 1.42^Aab	24.19 ± 1.16^Aa	13.82 ± 0.88^Ec	13.62 ± 0.46^Ec	19.80 ± 0.69^Eb	15.37 ± 0.08^Ea	28.45 ± 0.51^Ea	27.70 ± 0.73^Ea	24.89 ± 0.56^Ea	22.97 ± 0.96^Eb

^A−E.Different letter within the same column indicate statistically different (p < 0.05)
^a−c Different letter within the same row indicate statistically different (p < 0.05)

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