If fig is not gathered its stalk loses its firmness, the fruit hangs pendulous from the branch, begins to shrivel and become more and more saccharine by loss of water, and ultimately, if the climate is favourable, it assumes the condition of a dried fig. On the large scale however, figs are not dried on the tree, but are gathered and exposed to the sun and air in light trays till they acquire the proper degree of dryness. They can only be preserved in those regions where the summer and autumn are very warm and dry.
Dried figs are termed by the dealers either natural or pulled. The first are those which have not been compressed in the packing, and still retain their original shape.[2015] The second are those which after drying have been made supple by squeezing and kneading, and in that state packed with pressure into drums and boxes.
Smyrna figs, which are the most esteemed sort, are of the latter kind. They are of irregular, flattened form, tough, translucent, covered with a saccharine efflorescence; they have a pleasant fruity smell and luscious taste. Figs of inferior quality, as those called in the market Greek Figs, differ chiefly in being smaller and less pulpy.
Microscopic Structure—The outer layer of a dried fig is made up of small, thick-walled and densely packed cells, so as to form a kind of skin. The inner lax parenchyme consists of larger thin-walled cells, traversed by vascular bundles and large, slightly branched, laticiferous vessels. The latter contain a granular substance not soluble in water. In the parenchyme, stellate crystals of oxalate of calcium occur, but in no considerable number.
Chemical Composition—The chemical changes which take place in the fig during maturation are important, but no researches have yet been made for their elucidation. The chief chemical substance in the ripe fig is grape sugar, which constitutes from 60 to 70 per cent. of the dried fruit. Gum and fatty matter appear to be present only in very small quantity. We have observed that unripe figs are rich in starch.
Production and Commerce—Dried figs were imported into the United Kingdom in 1872 to the amount of 141,847 cwt., of which 91,721 cwt. were shipped from Asiatic Turkey, the remainder being from Portugal, Spain, the Austrian territories and other countries. In 1876 the imports were 163,763 cwt., valued at £318,717.
Kalamata, in the Gulf of Messenia, Greece, and Cosenza in the Italian province of Calabria citeriore, are also particularly known as supplying figs to some parts of continental Europe. In 1876 the exports of Kalamata to Trieste were 9½ millions of kilogrammes.
Uses—Dried figs are thought to be slightly laxative, and as such are occasionally recommended in habitual constipation. They enter into the composition of Confectio Sennæ.