Quantitative Evaluation of Carbohydrate Levels in Seeds for Home use By
UV-Visible Spectrophotometer
Ch. Madhu*, J. Swapna, R. Sneha Spandana, I. Niharika, K. Rohith Raj, B. Kalyan, M. Rajarajeshwari, T. Prathyusha
Sri Indu Institute of Pharmacy, Sheriguda, R.R Dist.501510
*Corresponding Author E-mail-pharmamadhuphd@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 body1. 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 sugars2. 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 water3.
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 samples5.
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 1TYPE 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% |
|
Soyabean |
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, DavidLaHart 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.
5. Matthews C E,
Van Holde KE and Ahern KG. Biochemistry.
3rd edition. Benjamin Cummings. 1999.
Received on 25.07.2012 Accepted
on 21.08.2012
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Asian J. Pharm. Tech. 2(3): July-Sept. 2012; Page 110-111