Abstract
Eight groups of citrus varieties grown in Spain were included in this study. Citrus pulp composition was (dry matter basis) 60–65% peel, 30–35% segment pulp and 0–10% seeds. Citrus seeds had a high percentage of protein, ether extract and crude fibre. Segment pulp contained slightly less fibre than citrus pulp. The proximate composition of citrus pulp was similar to that of the peel fraction and did not differ from previous results. Significant differences in fibre and acid detergent lignin of the dried citrus pulp samples were found between varieties. The drying process was studied. Temperatures over 130°C and the addition of calcium hydroxide affected some fractions of the pulp, mainly by increasing ash and fibre contents.
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