Study of Proximate Composition, Antinutrients, and Biochemical Effects of Processed Soybean Products Among Youths in Plateau State

Study of Proximate Composition, Antinutrients, and Biochemical Effects of Processed Soybean Products Among Youths in Plateau State

ABSTRACT

Soybean is a widely consumed legume in Nigeria due to its high protein content and nutritional value. However, processing methods can influence its proximate composition, antinutrient levels, and potential biochemical effects on consumers. This study investigates the nutritional quality of processed soybean products and evaluates their effects on selected biochemical parameters among youths in Plateau State.

Samples of processed soybean products were analyzed for proximate composition, including protein, fat, carbohydrate, fiber, and moisture content. Antinutritional factors such as phytates, tannins, and oxalates were also quantified. Blood samples from consenting youths were collected to assess biochemical markers, including serum protein, liver enzymes (ALT, AST), and lipid profile.

The results revealed that processing methods reduced antinutrient levels while preserving significant protein content. Biochemical analysis indicated no adverse effects on liver enzymes, and serum protein levels remained within normal ranges, suggesting that processed soybean consumption is generally safe and nutritionally beneficial. These findings support dietary recommendations for incorporating soybean products into youth diets and provide baseline data for further nutritional interventions in Plateau State.

Keywords: Soybean, Proximate composition, Antinutrients, Biochemical markers, Youths, Plateau State

CHAPTER ONE

1.0 Introduction

Soybean (Glycine max) is an important legume cultivated and consumed across Nigeria. Its high protein content makes it a key dietary component for youths who require adequate nutrition for growth and development. Processed soybean products, such as soy milk, soy flour, and roasted soybeans, are commonly consumed; however, their nutritional quality can be influenced by processing methods.

Although soybean provides essential nutrients, it also contains antinutritional factors such as phytates, tannins, and oxalates, which can hinder nutrient absorption. These antinutrients may affect protein digestibility, mineral availability, and overall nutritional benefits if not adequately reduced during processing. Understanding both the nutritional composition and potential biochemical impacts of soybean products is crucial for promoting healthy diets among youths in Plateau State.

1.1 Statement of the Problem

While soybean is recognized as a rich protein source, inadequate processing can leave high levels of antinutrients that interfere with nutrient absorption. Moreover, little research exists on the biochemical effects of consuming processed soybean products among youths in Plateau State. Concerns remain about whether these products contribute positively or negatively to serum protein levels, liver function, and lipid metabolism. This study aims to fill this knowledge gap by analyzing both the nutritional and biochemical implications of soybean consumption.

1.2 Aim and Objectives of the Study

Aim: To evaluate the proximate composition, antinutrient content, and biochemical effects of processed soybean products among youths in Plateau State.

Objectives:

1. Determine the proximate composition (protein, fat, carbohydrate, fiber, moisture) of processed soybean products.

2. Quantify antinutritional factors such as phytates, tannins, and oxalates in these products.

3. Assess biochemical parameters, including serum protein, liver enzyme activities (ALT, AST), and lipid profile, among youths consuming processed soybean products.

4. Evaluate the relationship between antinutrient levels and biochemical markers.

5. Provide recommendations on safe consumption and nutritional value of soybean products.

1.3 Research Questions

1. What is the proximate composition of processed soybean products consumed by youths in Plateau State?

2. What are the levels of antinutritional factors in these products?

3. How does consumption of processed soybean products affect serum protein, liver enzymes, and lipid profile in youths?

4. Is there a relationship between antinutrient levels and biochemical markers in consumers?

1.4 Research Hypotheses

• H₀₁: Consumption of processed soybean products does not significantly affect serum protein levels among youths.

• H₁₁: Consumption of processed soybean products significantly affects serum protein levels among youths.

• H₀₂: Processed soybean products do not significantly alter liver enzyme activities and lipid profile.

• H₁₂: Processed soybean products significantly alter liver enzyme activities and lipid profile.

1.5 Significance of the Study

This study provides valuable information on the nutritional quality of processed soybean products and their effects on biochemical health markers. The findings will guide youths, parents, nutritionists, and policymakers on safe consumption and optimal processing methods. Additionally, it adds to the existing literature on functional foods and dietary interventions in Plateau State.

1.6 Scope of the Study

The study focuses on processed soybean products commonly consumed by youths in Plateau State. It evaluates both proximate composition and antinutritional factors while assessing biochemical parameters such as serum protein, liver enzymes, and lipid profile. The study does not cover long-term clinical outcomes or other age groups.

1.7 Definition of Terms

• Proximate Composition: Nutritional constituents of food, including protein, fat, carbohydrate, fiber, and moisture content.

• Antinutrients: Compounds such as phytates, tannins, and oxalates that reduce nutrient bioavailability.

• Biochemical Markers: Blood parameters used to assess nutritional status and organ function, including liver enzymes and serum protein.

• Processed Soybean Products: Soy-based foods prepared through methods like roasting, boiling, or fermentation to enhance edibility and reduce antinutrients.

CHAPTER TWO

2.0 Literature Review

2.1 Proximate Composition of Soybean

Soybean is rich in protein, ranging from 36–40% of its dry weight, and contains carbohydrates, lipids, and dietary fiber. Studies indicate that processing methods such as roasting and boiling slightly reduce moisture content while retaining most proteins and fats (Adeyemi et al., 2019).

2.2 Antinutritional Factors in Soybean

Phytates, tannins, and oxalates are naturally present in soybeans. These compounds bind minerals such as iron, zinc, and calcium, reducing their absorption. Proper processing, including soaking, fermenting, and cooking, reduces antinutrient levels and enhances nutrient bioavailability (Oyedeji et al., 2018).

2.3 Biochemical Effects of Soybean Consumption

Soy protein has been linked to improved serum protein levels and lipid metabolism. Research shows that soy intake can reduce serum cholesterol and triglycerides, while minimally affecting liver enzyme activities in healthy individuals (Messina, 2016). However, high levels of residual antinutrients could theoretically impair nutrient absorption and alter biochemical markers.

2.4 Relevance to Youths in Plateau State

Youths constitute a nutritionally vulnerable group due to rapid growth and high energy demands. Consumption of processed soybean products can provide a sustainable protein source. Evaluating both the nutritional quality and biochemical effects ensures that dietary interventions are safe and effective.

2.5 Gaps in Literature

Most studies focus on either proximate composition or antinutritional factors without evaluating biochemical consequences of consumption. Few studies in Plateau State address both aspects among youths. This research integrates both nutritional and biochemical assessments to provide a comprehensive understanding of soybean product consumption.

2.6 Summary

Processed soybean products offer significant nutritional benefits, especially protein. Proper processing reduces antinutritional factors, making the products safer for consumption. Biochemical assessments, including serum protein and liver enzyme activities, provide insight into the physiological impact of these foods. This study bridges the gap in knowledge regarding dietary soybean intake and biochemical health markers among youths in Plateau State.