amehanni

Abul-Hamd E. MEHANNI MOHAMED

Assistant Professor - Associate Professor

Faculty of agriculture

Address: Food Science & Nutrition Dept. Faculty of Agriculture, New Campus (El Kawamel), Sohag University, New Sohag City, Sohag, Egypt.

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Agricultural Biochemistry second year Faculty of Agriculture

2018-10-14 17:36:04 |

CHEMISTRY OF DIFFERENT FOOD GROUPS:
CARBOHYDRATES
GENERAL OVERVIEW
General characteristics of carbohydrates/sugars
onosaccharides
Aldoses and Ketoses
Linear and ring formation in aldoses and ketoses
saccharides
The O-glycosidic bond
Examples of disaccharides
Polysaccharides
Structural polysaccharides, eg. Cellulose, Chitin
Storage polysaccharides, eg. Starch and Glycogen
Glycosaminoglyccans
Reactions of carbohydrates
mportant carbohydrates in nature

GENERAL CHARACTERISTICS OF CARBOHYDRATES/SUGARS
3
 They are a class of nutrients
 They are the most abundant of macronutrients
 Basic units are monosaccharides
 Polymeric in nature
 Contain functional group of aldehydes or ketones in addition to the alcohol
functional group
H


O
R – C = O


R – C – R
Aldehyde functional group Ketone functional group
 They are poly alcohols
 They carry out reactions of alcohols and aldehydes or ketones
 They are an energy source to living organisms

Attachments

Carbohydrates determination

2018-10-15 06:47:55 | Agricultural Biochemistry second year Faculty of Agriculture
Carbohydrates determination
Excess added sugar consumption is tied to poor health outcomes in children. The sugar content of beverages and foods children are exposed to is mostly unknown, yet this information is imperative for understanding potential risks from overconsumption of sugars in early life. We determined actual suga... Read more

Lipids lectuer

2018-10-19 06:37:09 | Agricultural Biochemistry second year Faculty of Agriculture
Lipids lectuer
Lipids are molecules that contain hydrocarbons and make up the building blocks of the structure and function of living cells. Examples of lipids include fats, oils, waxes, certain vitamins, hormones and most of the non-protein membrane of cells. WHAT ARE LIPIDS SOLUBLE IN? Lipids are not soluble i... Read more

Agricultural Biochemistry

2018-10-14 19:25:49 Agricultural Biochemistry second year Faculty of Agriculture
Agricultural biochemistry is the study of both chemistry and biochemistry which are important in agricultural production, the processing of raw products into foods and be Read more