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首页> 外文期刊>Journal of Agricultural and Food Chemistry >BIOCHEMICAL PROPERTIES OF ACTOMYOSIN AND EXPRESSIBLE MOISTURE OF FROZEN STORED STRIATED ADDUCTOR MUSCLES OF AULACOMYA ATER ATER (MOLINA) - EFFECTS OF POLYPHOSPHATES
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BIOCHEMICAL PROPERTIES OF ACTOMYOSIN AND EXPRESSIBLE MOISTURE OF FROZEN STORED STRIATED ADDUCTOR MUSCLES OF AULACOMYA ATER ATER (MOLINA) - EFFECTS OF POLYPHOSPHATES

机译:棘轮肌毒素的生物化学特性和冻存的层状条带化石肌的可湿性-多磷酸盐的影响

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摘要

Aulacomya adductor muscles with and without prior immersion in polyphosphates were frozen and stored at -30 degrees C. Expressible moisture of control samples increased after freezing and showed the highest increment at the second week of storage. Actomyosin extractability was not affected by freezing but decreased during frozen storage in both untreated and treated muscles. The reduced viscosity and the Mg2+-ATPase activity of actomyosin in dip-treatment free muscles fell with freezing and frozen storage. Polyphosphates reduced the amount of expressible moisture of the muscles and delayed the decrease in the enzymatic activity of actomyosin. Treatment with polyphosphates did not affect the viscosity of actomyosin. The relative percentages of myosin and paramyosin significantly decreased (p < 0.01) and those of actin significantly increased in actomyosin of both control and treated muscles at 4 weeks of frozen storage. These results would indicate that thin filaments in frozen striated adductor muscle are more stable than thick filaments.
机译:将具有和不具有预先浸入多磷酸盐中的奥拉科玛(Aulacomya)内收肌冷冻并在-30℃下储存。对照样品的可表达水分在冷冻后增加,并且在储存的第二周显示最高增量。肌动球蛋白的可提取性不受冷冻的影响,但在冷冻和未处理的肌肉中均会降低。肌动球蛋白在浸没处理的肌肉中降低的粘度和Mg2 + -ATPase活性随冷冻和冷冻保存而下降。多磷酸盐减少了肌肉可表达的水分,并延迟了肌动球蛋白酶活性的降低。用多磷酸盐处理不影响放线菌素的粘度。在冷冻储存4周时,对照肌和经治疗肌的肌动球蛋白中肌球蛋白和副肌球蛋白的相对百分比显着降低(p <0.01),肌动蛋白的相对百分比显着增加。这些结果表明,冷冻的横纹内收肌中的细丝比粗细丝更稳定。

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