A process for the preparation of flour and dried particles from Jerusalem artichoke tubers comprises reducing the tubers to particle form of average dimensions 10 mm by 10 mm by 2 mm, and shortly thereafter exposing the particles to a first application of a dilute solution of sulphur dioxide to provide a sulphur dioxide residue on the particles of approximately 250 parts per million. The particles are then blanched and the blanched particles are then subjected to a second application of a dilute solution of sulphur dioxide to raise the sulphur dioxide residue on the particles to approximately 400 parts per million. The particles are dried in a six stage air drier to a moisture content of approximately 7.0 %. The dried particles are ground to a fine particle powder in a pin mill.
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机译：一种从菊芋块茎制备面粉和干燥颗粒的方法，包括将块茎还原成平均尺寸为10 mm x 10 mm x 2 mm的颗粒形式，然后不久将颗粒暴露于第一次使用的二氧化硫稀释溶液中在颗粒上提供二氧化硫残留量约为百万分之250。然后将颗粒变白，然后对变白的颗粒进行第二次稀释的二氧化硫溶液的第二次施加，以将颗粒上的二氧化硫残留物提高至约百万分之400。将颗粒在六级空气干燥器中干燥至约7.0％的水分含量。将干燥的颗粒在针磨机中研磨成细颗粒粉末。
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