PDF(Pubmed)
Abstract：
In this study raw and steamed Pleurotus ostreatus were dried and ground and fractionated by sieving into four granulometric classes (< 200 µm, 200-250 µm, 250-355 µm and > 355 µm) and unsieved powders. The combined steam cooking and sieving improved the content of total polyphenols (+ 59.45%), flavonoids (+ 76.47%), condensed tannins (+ 68.75%) and trace elements (+ 45.51% Fe, + 63.63% Cu, + 62.42% Mn, + 121.11% Zn, and + 53.52% Se) as well as in-vitro and in-vivo antioxidant activities in the finest fraction < 200 µm compared to the raw powder. It was found that the intake at a dose of 250 mg/kg body weight of the finest fractions of raw and steamed powders by the stressed rats had more of a hepatoprotective effect marked by a reduction in the level of transaminases ALAT and ASAT. This work opens a new approach for valuing edible mushrooms in the development of new food products with high antioxidant value.
摘要：
在这项研究中，生平菇和蒸平菇被干燥和研磨，并通过筛分分为四个粒度等级（<200µm，200-250µm,250-355µm和>355µm）和未过筛的粉末。蒸汽蒸煮和筛分相结合提高了总多酚含量(+59.45%)，类黄酮（+76.47%），缩合单宁(+68.75%)和微量元素(+45.51%铁，+63.63%铜,+62.42%Mn,+121.11%锌，和53.52％Se）以及与原料粉末相比，最细部分<200µm的体外和体内抗氧化活性。发现，应激大鼠以250mg/kg体重的剂量摄入生粉和蒸粉的最细部分具有更多的肝脏保护作用，其特征是转氨酶ALAT和ASAT的水平降低。这项工作为在开发具有高抗氧化价值的新食品中评估食用蘑菇开辟了新途径。
