Original Article
Int. J. Chem. Sci, Volume: 15( 1)

Comparative Study of Physico-Chemical Parameters of Tender Coconut Water

*Correspondence:
Uphade BK Department of Chemistry, Padmashri Vikhe Patil College of Arts, Science and Commerce, Pravaranagar, Rahata, Ahmednagar, India
Tel:
09422741036; E-mail: [email protected]

Received: February 21, 2017 Accepted: March 14, 2017 Published: March 23, 2017

Citation: Uphade BK, Gadhave AG. Comparative Study of Physico-Chemical Parameters of Tender Coconut Water. Int J Chem Sci. 2017;15(1):110.

Abstract

In the present work, the comparative study of tender coconut water (TCW) was carried out from irrigated and non-irrigated areas. The parameters like sodium, potassium, calcium, phosphorous, iron, pH, acidity, magnesium, copper, chloride and sulphate of tender coconut water from irrigated and non-irrigated areas was analyzed for the comparison.

Keywords

Tender coconut water (TCW); Sodium; Potassium; Calcium; Phosphorous; Iron; pH; Acidity; Magnesium; Copper; Chloride and Sulphate

Introduction

Coconut water or tender coconut water has been used as a refreshing drink, cooking oil, hair oil and traditional medicine [1-5]. Tender coconut water has an antidote effect, antioxidant effect, hypolipidemic effect, cardio-protective effect, anti-atherosclerotic effect, antithrombotic effect, antifungal effect, anticancer effect, anti-cholecystitic effect, immunostimulatory effect, antibacterial activity and anti-dermatophytic activity [6-17]. The tender coconut water has been also used in coronary heart disease [17]. Tender coconut water has also been used to lower the blood pressure [18]. The green coconut water contains RNA phosphorous which was used in respiratory metabolism [19]. Coconut water is useful for the microbial growth [20] and also has antioxidant activity [21]. The coconut water contains soluble sugars, potassium, proteins, salts, oil, nicotinic acid, pantothenic acid and vitamin C [22,23]. The coconut water is also used in the organic synthesis research [24]. The chemical composition of tender coconut water varies with the hydrological and geographic change. In continuation of our ongoing research [25], in the present work we report chemical composition of tender coconut water from irrigated and non-irrigated areas.

Study area

The tender coconut water samples were collected from the Rahata tehsil which falls within North Latitude 19°45' and East Longitude 74°25'. The samples were collected during the month of January to April 2015. A total of 20 samples were collected from different irrigated and non-irrigated places for analysis. The study area is situated around Pravara canal, Pravara River and non-irrigated region of Rahata tehsil.

Experimental

The samples were collected, coconut fruits were removed and tender coconut water from each fruit was transferred into a new and clean polythene bottle. The determination of sodium, potassium and calcium was carried out flame photometrically [26] with working curve method. The phosphorous and iron was determined by spectrophotometrically [27]. The acidity of samples was determined by using titrimetric method [27]. The magnesium and copper were determined by atomic absorption spectrometry [26]. The chloride and sulphate were determined by turbidimetric method [26] with working curve method. The pH of the samples was analyzed by pH meter and all samples were kept in refrigerator at (2°C) for chemical composition.

Results and Discussion

The chemical composition of tender coconut water from irrigated areas was analyzed and shown in Table 1. The chemical composition of tender coconut water from non-irrigated areas was analyzed and reported in Table 2. The values of sodium, potassium, calcium, phosphorous, iron, pH, magnesium, copper, chloride and sulphate were higher for tender coconut water collected from irrigated areas than non-irrigated areas. While the tender coconut water collected from irrigated areas have less acidity as comparing to tender coconut water collected from non-irrigated areas. The coconut plants were situated near canal and Pravara River which carry municipal waste, industrial waste and domestic waste materials therefore it shows higher values for certain parameters. The higher amount of certain ions is mainly due to the selective absorption by plants. The coconut water from irrigated as well as non-irrigated region shows differences in phosphorous, sulphate and chloride content [28-30].

Parameters Samples
S1 S2 S3 S4 S5 S6 S7 S8 S9 S10
Sodium
(mg%)
45.2 50.3 45.3 50.7 47.4 46.5 44.6 45.1 50.6 49.3
Potassium
(mg%)
283.4 289.1 291.2 290.2 293.4 295.3 291.7 292. 290.6 291.9
Calcium (mg%) 45.3 50.9 48.7 48.7 46.8 47.2 46.1 47.3 50.1 49.8
Phosphorous
(mg%)
9.6 9.7 9.8 8.9 9.4 9.3 8.9 9.6 9.1 9.5
Iron (mg%) 116.5 115.8 114.7 115.6 115.2 116.4 117.8 117.4 116.9 116.7
pH 4.8 4.9 4.7 4.9 5.1 4.8 5.1 4.7 4.8 4.9
Acidity (mg%) 121.3 122.4 123.5 124.1 122.8 122.6 123.8 123.4 124.7 123.6
Magnesium (mg%) 14.6 12.5 16.7 14.7 13.3 13.4 14.5 12.3 17.1 11.4
Copper (mg%) 7.4 7.6 8.7 6.1 7.3 8.8 7.2 6.9 8.4 7.5
Chloride (mg%) 103.2 104.3 105.7 111.4 101.9 107.6 115.4 117.2 118.7 102.5
Sulphate (mg %) 9.3 8.4 7.9 9.2 9.7 8.6 12.4 8.4 13.6 11.5

Table 1. Chemical composition of tender coconut water (irrigated areas).

Parameters Samples
S11 S12 S13 S14 S15 S16 S17 S18 S19 S20
Sodium
(mg %)
43.3 48.2 43.4 48.5 45.8 45.1 42.4 44.1 48.2 48.1
Potassium
(mg %)
278.6 284.3 285.7 284.4 287.6 287.4 279.1 282.4 285.7 285.3
Calcium
(mg %)
42.7 49.3 47.2 47.8 45.1 46.2 44.6 45.7 48.3 47.4
Phosphorous
(mg%)
8.8 8.4 9.4 8.1 9.2 8.8 8.2 8.8 8.7 8.2
Iron
(mg%)
114.7 112.3 115.1 114.8 112.7 115.2 116.1 115.3 113.7 114.3
pH 3.4 3.7 3.4 3.7 3.8 3.6 4.2 3.4 3.8 3.6
Acidity
(mg%)
122.7 124.1 125.2 125.7 124.6 124.2 125.1 125.2 125.8 125.7
Magnesium
(mg%)
12.4 10.2 11.3 12.6 11.8 12.1 12.7 10.1 11.5 10.2
Copper
(mg%)
6.4 6.6 7.7 5.4 6.5 7.4 6.6 5.8 7.6 7.1
Chloride
(mg%)
101.1 100.5 99.4 100.2 99.2 101.2 105.4 102.6 100.7 99.1
Sulphate (mg%) 8.3 7.4 6.6 7.5 7.6 7.2 6.8 7.1 9.5 8.5

Table 2. Chemical composition of tender coconut water (non-irrigated areas).

Conclusion

The results show that many parameters in all samples of tender coconut water from the study area exceed the permissible limits [31] for drinking water. The values of calcium, magnesium, chloride and sulphate in all tender coconut water samples from the study area are below the permissible limits for drinking water. The pH values of all tender coconut water samples from the study area are below the permissible level of drinking water.

Acknowledgements

The authors are thankful to the Management, Pravara Rural Education Society's and Principal, P. V. P College, Pravaranagar for providing the necessary facilities in the department.

References