American Journal of Applied Science and Technology
31
https://theusajournals.com/index.php/ajast
VOLUME
Vol.05 Issue01 2025
PAGE NO.
31-35
10.37547/ajast/Volume05Issue02-09
Studying the impact of local wheat varieties on finished
product quality
Sh.B. O‘ktamov
Assistant Teacher, Yangier Branch of the Tashkent Chemical-Technological Institute, Yangiyer, Uzbekistan
F.E. Raxmatov
Assistant Teacher, Yangier Branch of the Tashkent Chemical-Technological Institute, Yangiyer, Uzbekistan
S.N. Obloberdiyev
Assistant Teacher, Yangier Branch of the Tashkent Chemical-Technological Institute, Yangiyer, Uzbekistan
S.B. Raxmonberdiyeva
Student, Yangier Branch of the Tashkent, Chemical-Technological Institute, Yangiyer, Uzbekistan
M.B. Abdukarimova
Student, Yangier Branch of the Tashkent, Chemical-Technological Institute, Yangiyer, Uzbekistan
Received:
17 December 2024;
Accepted:
19 January 2025;
Published:
24 February 2025
Abstract:
This study investigates the impact of local wheat varieties on the quality of the final product by
analyzing key physicochemical properties. Laboratory tests were conducted to assess wheat samples based on
test weight (775 g/L), moisture content (9.9%), gluten quality (98) and quantity (29%), transparency (55%), and
impurity level (1.36%). The results classified the analyzed wheat as first-grade flour, indicating its suitability for
high-quality product manufacturing. Understanding the influence of these parameters is crucial for optimizing
flour processing and improving end-product characteristics.
Keywords:
Local wheat varieties, flour quality, gluten content, moisture level, impurities, end-product
characteristics.
Introduction:
Wheat is one of the most important
staple crops worldwide, playing a crucial role in food
security and industrial processing. The quality of wheat
directly influences the characteristics of the final
product, including flour, bread, pasta, and other wheat-
based goods. Understanding the impact of local wheat
varieties on finished product quality is essential for
optimizing milling processes and improving food
production standards.
The physicochemical properties of wheat, such as test
weight, moisture content, gluten quality and quantity,
transparency, and impurity level, significantly
determine its classification and suitability for industrial
applications. Gluten strength and quantity are
particularly critical for baking quality, affecting dough
elasticity, fermentation properties, and final texture.
High-quality wheat must also meet standard moisture
and impurity levels to ensure consistency and efficiency
in milling and production.
In this study, a first-grade wheat variety was analyzed
to determine its physicochemical characteristics and
potential impact on final product quality. Laboratory
tests assessed key parameters, including:
•
Test weight (Natura): 775 g/L
•
Moisture content: 9.9%
•
Gluten quality and quantity: 98 (quality), 29%
(quantity)
American Journal of Applied Science and Technology
32
https://theusajournals.com/index.php/ajast
American Journal of Applied Science and Technology (ISSN: 2771-2745)
•
Transparency: 55%
•
Impurity level: 1.36%
OBJECTIVES OF THE STUDY
This research aims to:
✓
Evaluate the physicochemical properties of locally
grown wheat varieties.
✓
Analyze the impact of moisture content, gluten
strength, and impurities on flour quality.
✓
Assess the classification of wheat based on industry
standards for product suitability.
✓
Provide insights for optimizing wheat selection and
processing techniques in flour production.
✓
By addressing these objectives, this study
contributes to the scientific understanding of
wheat quality assessment and its role in producing
high-standard finished products.
MATERIALS AND METHODS
Materials. For this study, locally grown first-grade
wheat was analyzed to determine its physicochemical
properties and its impact on the quality of the final
product. The wheat samples were collected from a
regional agricultural source and stored under
controlled
conditions
to
prevent
external
contamination or moisture loss. The following
parameters were measured:
✓
Test weight (Natura): 775 g/L
✓
Moisture content: 9.9%
✓
Gluten quality and quantity: 98 (quality), 29%
(quantity)
✓
Transparency: 55%
✓
Impurity level: 1.36%
Methods. The study was conducted in a controlled
laboratory setting, following standardized analytical
methods to ensure accurate and reproducible results.
1. Test Weight (Natura) Measurement. The test weight
was determined using a hectoliter weight analyzer,
which provides an indication of kernel density and flour
extraction potential.
2. Moisture Content Analysis. The moisture content of
wheat grains was measured using the oven-drying
method at 105°C for 3 hours, following the ISO 712
standard. Maintaining proper moisture levels is crucial
for flour stability and milling efficiency.
3. Gluten Quality and Quantity Determination
•
Gluten quantity was measured using the
Glutomatic system, where wet gluten was extracted
and weighed.
•
Gluten quality was assessed using a gluten
index tester, providing insights into dough elasticity
and baking properties.
4. Transparency Test. Wheat transparency was
evaluated using an optical analyzer, where light
transmission through the wheat sample was measured.
A transparency level of 55% indicates moderate kernel
purity.
5. Impurity Level Measurement. Foreign matter and
impurities were analyzed using mechanical sieving and
aspiration techniques, with impurity levels quantified
as 1.36%.
6. Flour Milling and Processing. After initial quality
assessments, the wheat was milled using a laboratory-
scale roller mill, simulating industrial flour processing.
The resulting flour was subjected to additional testing
to evaluate its suitability for various food products.
7. Statistical Analysis. All measurements were
performed in triplicate, and results were expressed as
mean ± standard deviation. Statistical analysis was
conducted using one-way ANOVA, with a significance
level set at p < 0.05 to determine the impact of wheat
quality parameters on final product characteristics.
This methodological approach ensures reliable,
reproducible results that can be used for further
optimization of wheat selection and processing
techniques.
RESULTS AND DISCUSSION
Physicochemical Properties of Local Wheat Varieties
The wheat samples were analyzed for key
physicochemical parameters, which play a crucial role
in determining the final product's quality. The results
are presented in Table 1, summarizing the essential
properties of the tested wheat variety.
Table 1. Physicochemical Characteristics of Local Wheat Samples
Parameter
Measured Value Industry Standard (First-Grade Wheat)
Test Weight (g/L)
775
≥ 750
Moisture Content (%)
9.9
10–14
Gluten Quality
98
≥ 80
Gluten Quantity (%)
29
≥ 28
American Journal of Applied Science and Technology
33
https://theusajournals.com/index.php/ajast
American Journal of Applied Science and Technology (ISSN: 2771-2745)
Parameter
Measured Value Industry Standard (First-Grade Wheat)
Transparency (%)
55
≥ 50
Impurities (%)
1.36
≤ 2.0
The results indicate that the analyzed wheat meets
first-grade quality standards, making it suitable for
high-quality flour production.
Test Weight (Natura) and Its Effect on Milling Yield. The
measured test weight of 775 g/L suggests a high-
density grain structure, which correlates with superior
flour extraction rates. Higher test weight is associated
with higher endosperm content, leading to improved
milling efficiency and better flour yield.
Figure 1: Comparison of Test Weight
Moisture Content and Its Implications. The moisture
content of 9.9% is within the safe storage range,
preventing
microbial
growth
and
enzymatic
degradation. However, it is on the lower end of the
industry standard, which may impact flour hydration
properties during processing.
Figure 2: Moisture Content Comparison
American Journal of Applied Science and Technology
34
https://theusajournals.com/index.php/ajast
American Journal of Applied Science and Technology (ISSN: 2771-2745)
Gluten Quality and Quantity: Indicators of Baking
Performance
•
Gluten quantity (29%) meets the requirements
for strong flour, essential for bread and pasta
production.
•
Gluten quality (98) is exceptionally high,
indicating superior dough elasticity and extensibility,
leading to improved gas retention during fermentation.
These parameters confirm the suitability of this wheat
variety for high-protein flour applications, such as
bread and pasta manufacturing.
Figure 3: Gluten Quality and Quantity
Transparency and Impurity Levels
•
Transparency (55%) reflects a moderate level
of kernel purity, suggesting good milling potential.
•
Impurity levels (1.36%) remain below the
acceptable
limit of 2.0%,
ensuring
minimal
contamination in the final flour product.
Figure 4: Impurity Levels Comparison
Impact of Wheat Quality on Final Product
Characteristics. To assess how wheat quality translates
into the final product, flour was milled and tested for
dough rheology, baking properties, and sensory
evaluation. The results showed that:
•
High gluten content resulted in a more elastic
and stable dough.
•
Low moisture content required careful
hydration adjustments during mixing.
American Journal of Applied Science and Technology
35
https://theusajournals.com/index.php/ajast
American Journal of Applied Science and Technology (ISSN: 2771-2745)
•
Minimal impurities contributed to cleaner
flour, reducing the risk of off-flavors and
textural defects.
DISCUSSION
The findings align with previous research on wheat
quality assessment, confirming that test weight, gluten
strength, and purity are primary determinants of flour
performance. The high gluten index and favorable
milling properties suggest that this wheat variety is
well-suited for premium flour production.
However, optimizing moisture content during storage
and processing may further enhance its functionality.
Future studies could explore blending techniques with
other local wheat varieties to balance hydration
properties while maintaining high-quality gluten
strength.
CONCLUSION
This study examined the impact of local wheat varieties
on the quality of the final product by evaluating key
physicochemical properties, including test weight,
moisture content, gluten quality and quantity,
transparency, and impurity levels. The results
confirmed that the analyzed wheat meets first-grade
quality standards, making it suitable for high-
performance flour production.
Key findings include:
1.
Test weight (775 g/L) was above the minimum
industry standard, indicating high milling
efficiency and superior endosperm content.
2.
Moisture content (9.9%) was within the safe
storage range but slightly lower than the
recommended level, which may require
hydration adjustments in processing.
3.
Gluten quality (98) and gluten quantity (29%)
confirmed excellent dough strength and
elasticity, making this wheat variety ideal for
bread and pasta production.
4.
Transparency (55%) suggested moderate
kernel purity, contributing to efficient milling
and high-quality flour.
5.
Impurity levels (1.36%) remained well below
the acceptable limit, ensuring minimal
contamination in the final product.
This research contributes valuable insights into wheat
quality assessment and optimization, providing
scientific data to support improved wheat selection
and flour production techniques. The findings serve as
a foundation for further advancements in wheat
breeding,
processing
efficiency,
and
product
innovation.
REFERENCES
American Association of Cereal Chemists (AACC).
(2010). Approved Methods of Analysis. 11th Edition.
AACC International, St. Paul, MN.
AOAC International. (2019). Official Methods of
Analysis of AOAC International. 21st Edition. Rockville,
MD: AOAC International.
Bloksma, A. H., & Bushuk, W. (1988). Wheat Flour:
Structure and Functionality in Dough and Baked
Products. Advances in Cereal Science and Technology,
10, 1-91.
Dubat, A. (2016). A New Standard for Measuring Gluten
Strength in Wheat Flour. Cereal Foods World, 61(1), 4-
9.
Food and Agriculture Organization (FAO). (2021).
Global Wheat Market Trends and Quality Parameters
for Industrial Processing. FAO Publications, Rome.
Hoseney, R. C. (1998). Principles of Cereal Science and
Technology. 2nd Edition. American Association of
Cereal Chemists.
ICC
Standard
Methods.
(2020).
International
Association for Cereal Science and Technology
Methods for Wheat and Flour Analysis. Vienna, Austria.
USDA Wheat Quality Standards. (2023). United States
Department of Agriculture Guidelines for Wheat
Grading and Milling. Washington, D.C.
O‘zbekiston Respublikasi Qishloq xo‘jaligi vazirligi.
(2022). Mahalliy bug‘doy navlarining texnologik sifat
ko‘rsatkichlari bo‘yicha tadqiqot natijalari. Toshkent,
O‘zbekiston.
Karimov, B. A., & Tursunov, O. S. (2023). Oziq-ovqat
sanoatida bug‘doy sifati va uning tayyor
mahsulotga
ta’siri. O‘zbekiston Qishloq xo‘jaligi instituti ilmiy
jurnali, 12(3), 145-160.
Nurmatov, G. I. (2021). Bug‘doy tarkibidagi fizik
-
kimyoviy parametrlarning non mahsulotlari sifatiga
ta’siri. Samarqand Davlat Universiteti Ilmiy Jurnali,
19(5), 67-81.
European Commission. (2022). Wheat Processing
Guidelines and Quality Control Standards in the
European Union. Brussels, Belgium.
