Ahmeda Algari ALZAGTAT, Rema Yousef ELEDODY

Conformity of Fruit Nectar Samples to Libyan Specification Standards

The aim of this study is to evaluate the quality characteristics of physical, chemical and microbiological of some fruit nectar samples produced from some local and imported companies and sold in the city of Tripoli, and to determine their conformity with Libyan specification standards. In this study, 40 samples of different fruit nectars (grape, pineapple, guava, orange, apple, and mixed fruits) were collected from different local supermarket, five imported companies and 4 domestic which were available at the time of study. The Samples were classified based on their type of fruit nectars and also marked as (A, B, C, D) and (E, F, L, M, N) for different domestic or imported and imported companies respectively. The results showed that all the samples were free from artificial colours added. Local and imported samples were conform with the Libyan specification standards (990-2014) for fruit nectars. Five local and four imported samples were unconfirmed with the standards. In terms of acidity, some local and imported samples were conform to the Libyan specification standards, except one local sample and 5 imported samples. However, 35.3% of local samples and 43.5% of the imported samples unconfirmed to the Libyan standard specifications. Microbiological results showed that all local and imported samples were free from total bacterial count, yeasts and molds and coliform bacteria. Heavy metals (cadmium, lead, arsenic, copper, zinc, iron) of local and imported samples were conform to the Libyan specification standard, except 3 samples of imported products were had higher arsenic concentration. Based on the results of this study which indicated the importance of quality control programs for such products not only during production but also during storage and sales due to possibility of contamination and spoilage.

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AOAC. 1984. Association of Official Analytical Chemists. Heavy metals analysis. Method. No. 25.061.

ASSABAH. 2014. www.assabah.press.ma.com, Fruit nectars and nutritive value (Accessed date 8-2014)

Codex Alimentarius. 2005. General standard for fruit juice and nectar. Codex Standard 247-2005.

Free Palestine Agency, 2014. Consumption rate of fruit juices of some Arabic countries. www.palestineafree.com (Accessed date 8-2014)

IFU. 1996a. International Federation of Fruit Juice Producers. Total count of potential spoilaging microorganisms of fruit and related products. No. 2.

IFU. 1996b. International Federation of Fruit Juice Producers. Yeast and moulds count procedure. No. 3&4.

IFU. 2005. International Federation of Fruit Juice Producer. Detection of water soluble artificial colorants. No.24.

ISO. 1991. International Organization of Standards. Fruit and vegetable products-determination of pH. No. 1842.

ISO. 1998a. International Organization of Standards. Fruit and vegetable refractometric method. No. 2173. of soluble solids

ISO. 1998b. International Organization of Standards. Fruit and vegetable products-determination of titratable acidity. No. 750.

ISO. 2006. International Organization of Standards. Fruit and vegetable products-detection of coliform bacteria. No. 4832- 1&2.

Leahu A, Damian C, Oroian M, Ropciuc S. 2013. Physical-chemical parameters of fruit juices-evolution during storage. Lucrari Stiintifice-Seria Zootehnie. 59: 213-217

Maireva S; Usai T, Manhokwe S. 2013. The determination of adulteration in orange based fruit juices. International Journal of Science and Technology. 2(5): 365-372.

Nascentes C, Arruda Z, Noguerira R, Nobrega JA. 2004 Direct determination of Cu and Zn in fruit juices and bovine milk by theromospray flame furnace atomic absorption spectrometry. Talanta.64: 912-917.

NCSM. 2014. National Center of Standards and Meteorology, Libyan specification standards for fruit nectars, (990-2014), Tripoli, Libya.

Ofori H, Owusu M, Anyebuno G. 2013. Heavy metal analysis of fruit juice and soft drinks bought from retail market in Accra Ghana. Journal of Scientific Research and Reports. 2(1): 423- 428.

Rashed N, Aftab U, Azizul H. 2013. Microbiological study of vendor and packed fruit juices locally available in Dhaka city, Bangladesh. International Food Research Journal. 20 (2): 1011- 1015.