Petru Poni Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda Nr. 41A, Iasi 700487, Romania.
Bioresour Technol. 2011 Nov;102(21):10013-9. doi: 10.1016/j.biortech.2011.08.041. Epub 2011 Aug 17.
Orange peel (OP) was used as raw material for cellulose extraction. Two different pulping reagents were used, sodium sulfite and sodium metabisulfite. The effect of the main process parameters, sulfite agent dosage and reaction duration, on cellulose yield was investigated. A central composite rotatable design involving two variables at five levels and response surface methodology were used for the optimization of cellulose recovery. Other two invariable parameters were reaction temperature and hydromodulus. The optimum yields, referred to the weight of double extracted OP, were 40.4% and 45.2% for sodium sulfite and sodium metabisulfite digestions, respectively. The crude celluloses were bleached with hypochlorite and oxygen. The physicochemical characterization data of these cellulose materials indicate good levels of purity, low crystallinities, good whitenesses, good water retention and moderate molecular weights. According to these specific properties the recovered celluloses could be used as fillers, water absorbents, or as raw materials for cellulose derivatives.
橙皮（OP）被用作纤维素提取的原料。使用了两种不同的制浆试剂，亚硫酸钠和偏亚硫酸钠。研究了主要工艺参数，亚硫酸盐用量和反应时间对纤维素得率的影响。采用五水平两变量的中心组合旋转设计和响应面法对纤维素回收进行优化。另外两个不变的参数是反应温度和水模数。以双提取 OP 的重量为基准，亚硫酸钠和偏亚硫酸钠消化的最佳产率分别为 40.4%和 45.2%。粗纤维素用次氯酸盐和氧气漂白。这些纤维素材料的物理化学特性数据表明，它们具有良好的纯度水平、低结晶度、良好的白度、良好的保水能力和适中的分子量。根据这些特性，回收的纤维素可用作填料、吸水剂或纤维素衍生物的原料。
