本研究評估煅燒後花生殼灰成為脫酸大豆油吸附劑的可行性。花生殼的煅燒條件為300-1000 ℃及45-225分鐘。研究中將花生殼灰吸附大豆油中過氧化物、磷脂、色素、β-胡蘿蔔素和游離脂肪酸的脫除效率拿來與花生殼、稻殼灰、活性白土和再生白土者做一比較。實驗結果顯示灰化時間對脫除效率影響不明顯。500 ℃或700 ℃，是製備有效吸附劑的最佳溫度。以吸附大豆油中過氧化物、磷脂、色素、β-胡蘿蔔素和游離脂肪酸的觀點來看，活性白土和再生白土是非常好的吸附劑(游離脂肪酸除外)；花生殼灰是有效的吸附劑；花生殼和稻殼灰則是無效的吸附劑。若是要花生殼灰有更高的脫除效率，必須將之進一步活化。

Peanut hull ashes prepared by calcinating ground peanut hull were evaluated as adsorbent for bleaching the water-degummed and alkali-refined soy oil. The calcination conditions were in the range of 300 -1000 ℃ and 45-225 min. Their performances in adsorbing peroxides, phospholipids, pigments, β-carotene and free fatty acids in soy oil were compared with those of peanut hull, rice hull ash, activated clay and regenerated clay. Experimental results indicated that the influence of ashing time on the removal efficiency was not clear. 500 ℃ or 700 ℃ showed potential as a best ashing temperature for preparing effective adsorbent. On the basis of adsorbing peroxides, phospholipids, pigments, β-carotene and free fatty acids, activated clay and regenerated clay were found to be superior adsorbents, except in adsorbing free fatty acids; peanut hull ashes, effective adsorbents；while peanut hull and rice hull ash non-effective ones. Further activation on peanut hull ashes is suggested to obtain a better performance of it. Regenerated clay was found to be a good substituent for activated clay.

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