. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . presence of small crystals of \ari-ous forms. The Spermoderm is thicker over the furrows of the cotyledons thanin other parts. 1. Outer Epidermis. The thin-walled, tabular cells are jx^lygonalin surface view, both the walls and the contents being of a deep browncolor. Hairs from this layer are shown in Fig. 247, 3. 2. The Middle Layers, through whicli ramify the bundles, consistof a loose brown j)aren(hyma containing crystals of various forms. 3. The Inner Epidermis is m
. The microscopy of vegetable foods, with special reference to the detection of adulteration and the diagnosis of mixtures . presence of small crystals of \ari-ous forms. The Spermoderm is thicker over the furrows of the cotyledons thanin other parts. 1. Outer Epidermis. The thin-walled, tabular cells are jx^lygonalin surface view, both the walls and the contents being of a deep browncolor. Hairs from this layer are shown in Fig. 247, 3. 2. The Middle Layers, through whicli ramify the bundles, consistof a loose brown j)aren(hyma containing crystals of various forms. 3. The Inner Epidermis is much the same as the outer. ACORN. 305 Embryo (Fig. 248). The polygonal epidermal and subepidermalcells of the cotyledons contain distinct nuclei, each inclosing a nuclei occur along with starch grains in the small subepidermalcells. The remainder of the tissue is a parench^Tna with round cellsabout 100 n in diameter, having very small intercellular spaces at theangles. They are closely filled with eUipsoidal or irregular elongatedstarch grains {st) usually 15-20//, rarely and only in some varieties,. Fig. 247. Acorn. Hairs: i from epicarp; 2 from endocarp; 3 from spermoderm. (MOELLER.) 50 // long with very distinct, elongated hilum. The grains usually occursingly, although twins and various larger aggregates similar to thosefound in tapioca, sago, and buckwheat are not uncommon. The ellip-soidal forms remind us of the leguminous starches. Fibro-vascularbundles with small spiral vessels pass through the ground tissue. DIAGNOSIS. Acorn Coffee is a product of considerable importance. It is pre-pared from the shelled nut and should contain only traces of the tissuesof the pericarp and spermoderm. The conspicuous elements are theellipsoidal or irregularly elongated starch grains (Fig. 248, st) with elon- 3o6 NUT5. gated hilum, reminding us of leguminous starch. These are distorted inthe roasted product. Acorn Flour is with chocolate and other food preparat
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Keywords: ., bookcentury1900, bookdecade1910, bookpub, booksubjectplantanatomy
