Quantitative Evaluation of Carbohydrate Levels in Seeds
for Home Use by UV-Visible Spectrophotometer
V.S. Asha*, Ch. Madhu, Kavya. Mannem, V. Prateesh Kumar
Sri Indu Institute of Pharmacy ,Sheriguda, R.R Dist.501510
*Corresponding Author E-mail: ashajimmy.333@gmail.com
ABSTRACT:
A
rapid method was developed for the quantitative estimation of carbohydrates
present in the different seeds by UV-visible spectrophotometer. The sample
extract of the almond, cashews, peanuts, walnuts, corn, pistachios, chickpeas , wheat, barley, soya beans, were subjected by using anthrone
as reagent for the quantitative estimation of the carbohydrate. These samples
absorbance was read in UV-visible spectrophotometer at the wavelength of 750nm.
The recommendation for the general population is that carbohydrate should
supply 50 to 55 percent of total calories, and 130 grams per day (520 calories
per day) for male and female adults and for athletes is between 55 and 65
percent of total calories.
KEYWORDS: Seeds, UV-visible spectrophotometer,
wavelength, anthrone, absorbance.
INTRODUCTION:
Carbohydrates
act as the primary source of energy which is converted into glucose to generate
energy essential for metabolism in every cell of the body. Though there is no
absolute requirement of carbohydrates, they are essential to ensure that energy
is available to the body to perform its normal functions. Carbohydrates perform numerous
roles in living things. Polysaccharides serve for the storage of energy (e.g.,
starch and glycogen), and as structural components (e.g., cellulose in plants
and chitin in arthropods)1-5. The 5- carbon monosaccharide ribose is an
important component of coenzymes (e.g., ATP, FAD, and NAD) and the backbone of
the genetic molecule known as RNA. The related deoxyribose
is a component of DNA. Saccharides and their
derivatives include many other important biomolecules
that play key roles in the immune system, fertilization, preventing
pathogenesis, blood clotting, and development.
In
food science and in many informal contexts, the term carbohydrate often means
any food that is particularly rich in the complex carbohydrate starch (such as
cereals, bread, and pasta) or simple carbohydrates, such as sugar (found in
candy, jams, and desserts) For most people, between 40% and 60% of total
calories should come from carbohydrates, preferably from complex carbohydrates
(starches) and naturally occurring sugars. Complex carbohydrates provide
calories, vitamins, minerals, and fiber. Carbohydrates formula is C12H22O11.
EXPERIMENTAL:
Chemicals
and Reagents
Anthrone, Sulphuric acid were purchased from
Merck Specialties Pvt. Ltd.
Instrumentation:
Ultraviolet-visible spectroscopy refers to absorption
spectroscopy or reflectance spectroscopy in the ultraviolet-visible spectral
region. This means it uses light in the visible and adjacent (near-UV and
near-infrared (NIR)) ranges. The absorption or reflectance in the visible range
directly affects the perceived color of the chemicals involved. In this region
of the electromagnetic spectrum, molecules undergo electronic transitions.
Sample
preparation:
Almond,
cashews, peanuts, walnuts, corn, pistachios, chick peas, wheat, barley, soya
beans were taken as samples. 5 grams of each sample was extracted separately in
25ml of distilled water.
Reagent
Preparation:
0.2
grams of anthrone was weighed accurately and
dissolved in concentrated sulphuric acid and make up
the volume up to 100ml and finally transferred it in to a 100ml of reagent
bottle.
Procedure:
Pipette
out the 1ml of each extracted sample in to a 25ml of volumetric flask and add
2ml of freshly prepared anthrone reagent in each
volumetric flask and finally make up the volume up to the mark with distilled
water. Reference was prepared by taking 2ml of anthrone
reagent in a 25ml of volumetric flask and make up the volume up to the mark
with distilled water. To the above prepared samples wavelength was check in UV-visible
spectrophotometry and wavelength was set at 750nm at
that wavelength the developed colour absorbances were noted for the above mentioned samples.
RESULT
AND DISCUSSION:
From
the experiment in almond 0.97%, cashews 1.4%, peanuts 1.03%, walnuts 0.78%,
corn 0.9%, , pistachios 1.3%, chickpeas 1.3%, , wheat 2.59%,barley 1.4%, soya
beans 0.55% of carbohydrates are evaluated. The recommendation for the general
population is that carbohydrate should supply 50 to 55 percent of total
calories, and 130 grams per day (520 calories per day) for male and female
adults and for athletes is between 55 and 65 percent of total calories.
Table
1:
TYPE OF SEEDS |
CARBOHYDRATE
CONTENT (%) |
Almond |
0.97% |
Cashews |
1.4% |
Peanuts |
1.03% |
Walnuts |
0.78% |
Corn |
0.9% |
Pistachios |
1.3% |
Chick peas |
1.3% |
Wheat |
2.59% |
Barley |
1.4% |
Soybean |
0.55% |
Food
Amount of Carbohydrate:
CONCLUSION:
From
the Wheat we gain high calories of
carbohydrates of total calories to increase the activity levels in the
body.
REFERENCES:
1. Flitsch SL and Ulijn RV. Sugars
tied to the spot. Nature. 2003;421:219–220.
2. Maton Anthea, Jean Hopkins, Charles
William McLaughlin, Susan Johnson, Maryanna Quon Warner, David LaHart and
Jill D. Wright. Human Biology and Health. Englewood Cliffs, New Jersey, USA:
Prentice Hall. 1993:52–59.
3. John
Merle Coulter, Charler Reid Barnes and Henry Chandler
Cowles. A Textbook of Botany for Colleges and Universities. 1930.
4. Carl
A. Burtis, Edward R. Ashwood
and Norbert W. Tietz. Tietz
fundamentals of clinical chemistry.2000.
5. Matthews
C E, Van Holde KE and Ahern KG. Biochemistry. 3rd
edition. Benjamin Cummings. 1999.
Received on 28.06.2012 Accepted on 06.07.2012
© Asian Pharma
Press All Right Reserved
Asian J. Pharm.
Ana. 2(3): July-Sept. 2012; Page 71-72