Istituto per lo Studio dei Materiali Nanostrutturati, CNR, via U. La Malfa 153, 90146 Palermo, Italy.
Istituto per la Bioeconomia, CNR, via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy.
Molecules. 2021 Jan 23;26(3):596. doi: 10.3390/molecules26030596.
Isolating cellulose from citrus processing waste without employing chemicals has so far been an unfulfilled goal of chemical research applied to the valorization of a widely available biowaste, annually totaling >100 million tonnes. We have applied hydrodynamic cavitation using a Venturi-type reactor for the extraction of all valued bioproducts of industrial citrus processing waste in water only, directly on a semi-industrial scale. After reporting the discovery of IntegroPectin in the soluble fraction of the aqueous extract, we now report the isolation of a cellulosic material in the water-insoluble fraction of cavitated lemon and grapefruit processing waste. Named "CytroCell", the material is cellulose of low crystallinity, high porosity, good water holding capacity and good dispersibility in water. These properties open the route to mass-scale production of a useful functional material from a cheap and abundant biowaste.
从柑橘加工业废物中提取纤维素而不使用化学物质，这一直是化学研究应用于生物废物增值的一个未实现的目标，每年的生物废物总量超过 1 亿吨。我们应用了在文丘里型反应器中产生的水力空化作用，仅用水从工业柑橘加工业废物中提取所有有价值的生物制品，直接在半工业规模下进行。在报告了 IntegroPectin 在水提取物的可溶性部分中的发现之后，我们现在报告了在空化柠檬和葡萄柚加工废物的水不溶性部分中分离出一种纤维素材料。该材料被命名为“CytroCell”，它是一种结晶度低、多孔性好、持水能力强、在水中分散性好的纤维素。这些特性为从廉价且丰富的生物废物大规模生产有用的功能材料开辟了道路。
