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Ustinova O. I, Ustinov Y. V. Biological Activity of Fresh-Squeezed Lemon Juice. Biosci Biotechnol Res Asia 2015;12(3)
Manuscript received on : 30 September 2015
Manuscript accepted on : 15 November 2015
Published online on:  14-01-2016
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Biological Activity of Fresh-Squeezed Lemon Juice

Olga I. Ustinova and Yuri V. Ustinov

Medical Institute “REAVIZ” 227, Chapaevskaya Str., Samara, 443001, Russian Federation

DOI : http://dx.doi.org/10.13005/bbra/1890

ABSTRACT: The issue of alimentary correction of health by natural foods of plant origin, metabolically relevant to the organism, is the most important for maintaining human health. Fresh-squeezed lemon juice an hour after intake dramatically increases the biological activity of all body systems, especially cardiovascular system, as well as the stomach-pancreas-spleen systems, lungs, large intestine, liver, and gall-bladder. In case of the functional weakness of these systems, use of lemon juice is appropriate.

KEYWORDS: Alimentary correction of health; lemon juice; biological activity of organs; biological activity of lemon juice

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Introduction

According to research conducted by the World Health Organization, longevity and quality of human life is conditioned by heredity (20%), environmental conditions (20%), life pattern (50%), and a level of health care (just 10%) [1]. A healthy life pattern involves healthy (bringing health) nutrition. The intake of nutrients and minor components of food by the human organism is a factor that largely determines the health of the population. Therefore, the alimentary correction of health by natural foods of plant origin, immunoprotectors, metabolically close to the organism, is essential to maintain human health [2, 3, 4, 5, 6]. Lemon is one of the most important plant products, used not only to improve the taste of food, but also to correct the human’s health condition.

Chemical composition of lemon juice depends on the variety and habitat of the lemon tree. Fruit pulp contains up to 8% of citric acid and up to 0.25% of malic acid [7], as well as sugars – from 2.06 to 6.0% (glucose over 0.80%, sucrose up to 0.75%, and fructose more than 0.60%), proteins – not more than 0.9%, fat (lemon floral attar) up to 0.1%; pectins – up to 0.5%. Besides, lemon contains also fibre, glycosides of various structures, etc. [8]. The content of vitamins, mineral nutrients and macronutrient elements, as well as recommended daily allowance [8, 9] are presented in Table 1.

Table 1: The average content of vitamins, mineral nutrients and macronutrient elements per 100 g of lemon juice

Vitamins
Vitamins Vitamin А Vitamin В1 Vitamin В2 Vitamin В3 Vitamin В6 Vitamin В9 Vitamin С Vitamin Е
 

Content in the lemon

 

 

0.0010 mg 0.04 mg 0.02 mg 0.2 mg 0.06 mg 9.0 mg 40.0 mg 0.5 mg
 

Daily demand

 

5000 МЕ 1.5 mg 1.7 mg 20 mg 2 mg 200 µg 60 mg 20 МЕ
Mineral nutrients
Mineral nutrients Iron Potassium Calcium Magnesium Sodium Sulphur Phosphorus Chlorine Boron Manganese Copper Molybdenum Fluorine Zinc
Content in the lemon 0.6 mg 163.0 mg 40.0 mg 12.0 mg 11.0 mg 10.0 mg 22.0 mg 5.0 mg 175.0 µg 40.0 µg 240.0 µg 1.0 µg 10.0 µg 125.0 µg
Daily demand 10-20 mg 1-2 g 1000 mg 400 mg 4-5 g 500-1000 mg 1000 mg 3400 mg 2-5 mg 2 mg 2 mg 75 µg 2-4 mg 15 mg

The lemon fruits also contain biologically active substances, such as flavonoids, coumarin derivatives, and sesquiterpenes [7, 8, 10].

In ancient medicine of the East in X-XI century it was believed that lemon “tans” stomach, strengthens the heart, helps against diseases of the liver and stomach, fever, infectious diseases, sepsis, asthma, and angina. It was used as antidote against insect bites. In folk medicine, lemon juice and lemon fruits were widely used against the diseases of the stomach, liver, gallbladder and biliary tract, kidneys, at joint and muscular pain, as a haemostatic, antipyretic, tonic medications; at various infectious diseases, as well as for the treatment of diabetes and hypertension [7, 10].

Contemporary research shows that a rich vitamin and mineral composition give the lemon juice a broad spectrum of useful properties. Citric acid contained in the juice composition is converted during digestion into alkalies, reducing the acidity of the stomach and eliminating the burning sensation. Lemon juice thins the bile, stimulates its freer outflow, enhances the action of hepatic enzymes and prevents the formation of gallstones. It is able to break down the urate tophus in serious diseases, such as gout and rheumatism. Potassium, contained in the lemon in large quantities, improves the nutrition of the cells of the brain, heart, and nerve terminals. Calcium helps strengthen bones and tooth enamel. The combination of magnesium and calcium supports the body in the periods of increased nervous and physical stress, helps to maintain feeling of well-being and working capacity. Citric acid is capable of forming soluble complexes with calcium that is used in the treatment of diseases associated with stone formation in the pancreas and kidneys. The pectin contained in lemons, along with other nutrients that improve metabolism and blood circulation, can help to reduce the level of cholesterol in the blood, promotes weight loss and normalization of blood pressure. The availability of vitamin C is very beneficial for blood-vascular system since it strengthens blood vessels, making them less permeable, and has a beneficial effect on the capillaries. Besides, this vitamin strengthens the immune system, is an excellent prevention during seasonal epidemics of influenza and ARVI. The beneficial properties of lemon include also antimicrobial and anti-inflammatory effects [11, 12].

The aim of this study was identifying the nature of the effect of fresh-squeezed lemon juice on the human body, as well as its effect on change in biological and functional activity of human organs.

Main part

Research Materials and Methods

To analyze change in biological activity of organs under the effect of the lemon juice we have used the RUNO software and hardware system (thermoalgometry). The diagnostics was based on the reflectory connection between the activity of autonomic centers and skin zones sensitivity. The less the sensitivity threshold of the corresponding acupuncture points of the organ’s meridian the higher the biological activity of the respective organ. Professional medical diagnostic system RUNO is included in the State Register of Medicines and Medical Products, certified by the Ministry of Health of the Russian Federation. Today it is the most accurate, complete, and at the same time, simple technology of express-diagnostics allowing identifying the changes in the organs’ functions activity within 3-5 minutes.

Study was conducted based on the tests of apparently healthy men and women [13] under the most socially significant ages from 20 through 69 years.

To obtain control measurements, i.e. the average annual biological activity of the organs, measurements of the biological activity of organs of apparently healthy people were performed every 2 weeks during 3 years (since November 2012 through October 2015) in the fasted state from 7.00 a.m. to 8.00 a.m. To identify the average biological activity of the organs, 557 measurements were carried out during this period. The number of measurements and the average age of the tested persons in various age groups are presented in Table 2.

Table 2: The number and the average age of healthy men and women in various age groups involved in control measurement

Age group 20-29 years 30-39 years 40-49 years 50-59 years 60-69 years
Number of tested people 40 165 65 169 118
Average age in the age group,

years

27.7±0.02 37.0±0.08 43.1±0.03 51.7±0.02 64.0±0.01

To assess changes in biological activity of organs under the effect of 50 ml of used fresh-squeezed lemon juice, 65 persons were tested immediately after ingesting the juice and one hour after ingesting within the same time interval of the day (from 7 a.m.) employing the software and hardware system RUNO.

The analyzed databases were created in Microsoft Excel 2003. The ordered samples were constructed for each of the following indicators:

  • The age of the tested people;
  • 12 measurements of the biological activity of the organs’ meridians:
  • Control measurement” of the biological activity of the organs;
  • Biological activity of each organ immediately after intake of fresh-squeezed lemon juice;

Biological activity of each organ one hour after intake of fresh-squeezed lemon juice.The average value indices based on the mode, median and moments, as well as their confidence limits, were revealed. The critical level of significance was taken as p = 0.05. The indicators of the biological activity status of the organs are presented in Table 3 and in Fig. 1.

Table 3: The average values of biological activity status indicators for various organs

Meridian Vb F P G E Rp C Jg V R Mc Tr
Gall bladder Liver Lungs Large

intestine

Stomach Pancreas –

Spleen

Heart Small intestine Urinary

 bladder

Kidneys Pericardium

(vascular system)

Triple heater

(hormonal system)

 

Control 100.17 100.74 100.65 101.40 99.90 101.83 101.69 100.82 100.96 99.99 100.45 101.88
measurement ±1.49 ±1.19 ±1.17 ±1.22 ±1.20 ±1.41 ±0.95 ±2.31 ±2.31 ±1.39 ±1.14 ±0.99
Immediately 99.5 103.3 101.8 102.3 99.7 103.2 101.3 97.8 105.3 102.2 100.3 99.2
after the intake ±4.23 ±3.56 ±3.82 ±2.60 ±4.23 ±5.00 ±2.34 ±2.59 ±7.19 ±4.81 ±3.83 ±2.49
One hour after 98.2 94.4 96.6 94.6 97.2 94.2 95.6 94.5 100.0 98.7 94.0 95.9
the intake ±4.35 ±3.71 ±3.48 ±3.70 ±3.33 ±4.04 ±3.08 ±2.57 ±8.18 ±4.64 ±3.29 ±2.72

 

figure 1 Figure 1: The indicators of the biological activity status for various organs

Click here to view full figure

 

Changes in biological activity of the organs after intake of lemon juice with regard to “control measurement” are presented in absolute values and percentage ratio in Table 4 and Fig. 2.

Table 4: Changes of the organs’ biological activity in absolute values (∆, points) and percentage ratio (∆,%) against the biological activity indicators at “control measurements”

Meridian Vb F P G E Rp C Jg V R Mc Tr
Immediately after the intake ∆, points 0.71 -2.55 -1.11 -0.87 0.96 -1.33 0.43 3.04 -4.30 -2.17 0.19 2.72
∆, % 0.71 -2.53 -1.10 -0.8% 0.95 -1.31 0.43 3.01 -4.26 -2.17 0.19 2.67
One hour after the intake ∆, points 1.96 6.37 4.08 6.76 3.42 7.60 6.09 6.36 0.92 1.25 6.42 5.95
∆, % 1.96 6.32 4.05 6.67 3.40 7.46 5.99 6.31 0.91 1.25 6.39 5.84

 

figure 2 Figure 2: Changes in the biological activity of the organs in percentage ratio against the biological activity indicators at “control measurements”.

Click here to view full figure

 

Final part

Changes in the biological activity of the organs regarding the control measurements immediately after intake of fresh-squeezed lemon juice are presented in Table 5. Changes in the biological activity of the organs regarding the control values one hour after intake of fresh-squeezed lemon juice are presented in Table 6.

Table 5: Changes in the biological activity of the organs regarding the control measurements immediately after intake of fresh-squeezed lemon juice, %

Meridian of the organ Jg Tr E Vb C Mc G P Rp R F V
% 3.0 2.7 1.0 0.7 0.4 0.2 -0.9 -1.1 -1.3 -2.2 -2.5 -4.3

Table 6: Changes in the biological activity of the organs regarding the control measurements one hour after intake of fresh-squeezed lemon juice, %

Meridian of the organ Rp G Mc F Jg C Tr P E Vb R V
% 7.5 6.7 6.4 6.3 6.3 6.0 5.8 4.1 3.4 2.0 1.2 0.9

The comparison of the results (Fig. 2, Tables 5 and 6) show that the total changes in the biological activity of all organs immediately after intake of fresh-squeezed lemon juice is “-4.3%”, i.e. the total biological activity of the organism decreases. Speaking the language of Oriental medicine, lemon juice when ingested initially displays the female principle of Yin [14]. At that the biological activity of Jg, Tr, E, Vb, C, and Mc increases, i.e., the conditions of entire cardiovascular system (Jg, Tr, C, Mc), stomach (E), and liver (Vb) are activated. An hour after intake of the lemon juice, the total change in the biological activity of all organs becomes equal to “+56,5%”, i.e. the total biological activity of the organism increases dramatically. Speaking the language of Oriental medicine, lemon juice, while absorbed by the body, displays a pronounced male principle of Yang [14].

Conclusions

In summary, we can draw the following conclusions.

  1. The response of the body to fresh-squeezed lemon juice immediately after intake consists in the decrease of the total biological activity by 4.3%. At that, the biological activity of the cardiovascular system (Jg, Tr, C, MS), stomach (E), and liver (Vb) increases.
  2. An hour after intake of the fresh-squeezed lemon juice, the biological activity of all body organs and systems sharply increases (in total by 56.5%). Maximum biological activity is displayed by cardiovascular system (Mc, Jg, C, Tr) – upsurge in activity by 24.5%; stomach – pancreas – spleen (RP, E) – by 10.9 %; large intestine – lungs (G, P) – by 10.8%; and liver – gall bladder (F, Vb) – by 8.3%. Renal – bladder system (R, V) activates to a lesser extent – just by 2.1%.
  3. Thus, we can recommend the use of fresh-squeezed lemon juice for alimentary correction of health to the people suffering from functional weakness of the cardiovascular system, stomach – pancreas – spleen, large intestine – lungs, and liver – gall bladder system.

Acknowledgement

The authors express their gratitude to N.B. Kalugina for her highly intellectual technical support.

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