俄亥俄州大学：《食品科学》课程教学资源（PPT课件，英文版）Experimental Foods

Experimental Foods Carbohydrates Starch and Sugars Alternative Sweeteners

Experimental Foods Carbohydrates: Starch and Sugars Alternative Sweeteners

Starch 1 Wheat 2 Corn 3 Potato 4 Rice 5. Cassava(Tapioca)

Starch 1. Wheat 2. Corn 3. Potato 4. Rice 5. Cassava (Tapioca)

amyloplast with hloroplast endoc asiC reticulum(ER) chloro asts with grana embedded in stroma ribosomes plasmodesma cell walls with middle lamella Figure P-2 A generalized plant cell. The drawing is based on the appearances of cellular plasma membrane organelles in electron micrographs (W.A. Jensen and F B. Salisbury, 1984, Botany, p. 46)

Rhamnogalacturonan Cellulose Fibril Arabinogalactan Xylo ducan Secondary Wall y Primary Wall Middle Lamella Intercellular Spa Fro Waldrop FIG, 17.1. A MODEL OF CELL WALL ARCHITECTURE

Wheat Endosperm Starch Cell fIlled ith Granul Kernel Starch Granules ENDOSPERM Matrix Cellulose walls Aleurone Cel Nucellar Tissue Seed Coat (Testa) Cross ct IignIn Tube Cells 点短一 Hypodermis Scutellum Plumule sheath Bi other. petch an VIEW OF WHEAT KERNEL BISECTED LONGITUDINALLY

Starch Wheat Kernel

(b)

(b) FICURE 7. Segment of starch granule before and after swelling. (a)Unswollen segment;(b)swollen segment( After Meyer and Bermfeld, 1940.)

Starch Molecular structure Polysaccharides Amylose Amylopectin

Starch Molecular Structure Polysaccharides Amylose Amylopectin

A myl pEcTIN Amylose BRAnched at iKaSt= N RAAJ I NkAse k两 4 glyCos d c I. 4 glycosidic link+

Starch Molecular structure Polysaccharides Amylose Amylopectin Linkage 1,4 glycosidic 1, 6 glycosidic

Starch Molecular Structure Polysaccharides Amylose Amylopectin Linkage 1,4 glycosidic 1,6 glycosidic