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Effect of storage on the quality of processed palm oil collected from local milling points within Ile-Ife, Osun State, Nigeria

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Abstract

The influence of storage practices on physicochemical and microbial changes in crude palm oil (CPO) from milling points in Ile-Ife, Nigeria were investigated. Freshly milled CPO samples were collected from four traditional milling points, dispensed in 150 mL portions in sterile bottles and stored under two different conditions (sunlight reflection and in the dark, both at room temperature) for 4 months. Samples were obtained periodically during the storage period for microbiological and physicochemical analysis following established methods. The aerobic mesophilic (2.16 × 106 cfu/mL) and Enteric bacterial (1.6 × 106 cfu/mL) counts of the fresh CPO samples decreased during storage with those exposed to sunlight reflections having very high significant difference (P < 0.00) compared to those stored in the dark at P ≤ 0.05. The bacterial isolates were identified as Bacillus pasteurii (29%), Staphylococcus aureus (22%), Enterobacter aerogenes (17%), Micrococcus sp. (12%), Escherichia coli (8%), Pseudomonas aeruginosa (7%) and Serratia marcescens (5%). Of the physicochemical parameters studied, moisture content (MC) reduced significantly from between 2.55 and 5.50% in fresh sample to between 0.1 and 0.5% at the end of storage while the free fatty acids (FFA) increased from between 0.5 and 1.0% to between 2.2 and 3.1% respectively. Storage under the influence of sunlight resulted in significant increase in iodine value of CPO from Mills 1, 2 and 4, indicating oxidative instability of the palm oil. It could be concluded that storage of freshly milled palm oil at room temperature (in the dark or exposure to sunlight) for a period of 4 months resulted in reduced bacterial load, decrease in MC and stable peroxide value and FFA.

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Abbreviations

%FFA:

Percentage free fatty acid

PV:

Peroxide value

IV:

Iodine value

MC:

Moisture content

CFU:

Colony forming unit

References

  • Abdulkadir AG, Jimoh WLO (2013) Comparative analysis of physico-chemical properties of extracted and collected palm oil and tallow. ChemSearch J 4(2):44–54

    Google Scholar 

  • Akinola FF, Oguntibeju OO, Adisa AW, Owojuyigbe OS (2010) Physico-chemical properties of palm oil from different palm local factories in Nigeria. J Food Agric Environ 8:264–269

    CAS  Google Scholar 

  • Almeida DTD, Viana TV, Costa MM, Silva CDS, Feitosa S (2018) Effects of different storage conditions on the oxidative stability of crude and refined palm oil, olein and stearin (Elaeis guineensis). Food Sci Technol Campinas 39(1):211–217. https://doi.org/10.1590/fst.43317

    Article  Google Scholar 

  • AOAC (2012) Official methods of analysis, 19th edn. Association of Official Analytical Chemist, Washington, DC

    Google Scholar 

  • Aurand LW, Woods AE, Wells MR (2007) Food composition and analysis. Avi-Van Nostrand and Reinhold, New York, pp 216–217. Doi: 10. 1007/978-94-015-7398-6_7

  • Chabiri SA, Hati SS, Dimari GA, Ogugbuaja VO (2009) Comparative quality assessment of branded and unbranded edible vegetable oils in Nigeria. Pac J Sci Technol 10(2):927–934

    Google Scholar 

  • Cheesbrough M (2004) District laboratory practice in tropical countries. Low price Edition Part 2. Cambridge Press, Cambridge

  • Embrandiri A, Singh RP, Ibrahim HM, Ramli AA (2012) Land application of biomass residue generated from palm oil processing: its potential benefits and threats. Environmentalist 32:111–117. https://doi.org/10.1007/s10669-011-9367-0

    Article  Google Scholar 

  • FAO (2017) Food and Agriculture Organisation of the United Nations. Codex Alimentarius International Food Standards, pp 1–13

  • Holt JG, Kneg NR, Sneath PHA, Stanley JT, Williams ST (1994) Bergey’s manual of determinative bacteriology. William and Wilkins Publisher, New York

    Google Scholar 

  • Ismali I, Ali Hassan M, Abdul Rahman NA, Soon CS (2010) Thermophilic biohydrogen production from palm oil mill effluent (POME) using suspended mixed culture. Biomass Bioenergy 34(1):42–47. https://doi.org/10.1016/j.biombioe.2009.09.009

    Article  CAS  Google Scholar 

  • Izah SC, Ohimain EI (2013) Microbiological quality of crude palm oil produced by smallholder processors in the Niger Delta, Nigeria. J Microbiol Biotechnol Res 3(2):30–36

    Google Scholar 

  • Matthaus B (2007) Use of palm oil for frying in comparison with other high-stability oils. Eur J Lipid Sci Technol 109(4):400. https://doi.org/10.1002/ejlt.200600294

    Article  CAS  Google Scholar 

  • Nkpa NN, Dsanu FC, Arowolo TA (1990) Effect of packaging materials on storage stability of crude palm oil. J Am Oil Chem Soc 67(4):259–263. https://doi.org/10.1007/BF02540653

    Article  CAS  Google Scholar 

  • Ohimain EI, Izah SC (2015) Physicochemical characteristics and microbial population of palm oil sold in major markets in Yenagoa Metropolis, Bayelsa States, Nigeria. J Environ Treat Tech 3(3):143–147

    Google Scholar 

  • Ohimain EI, Daokoru-Olukole C, Izah SC, Alaka EE (2012) Assessment of the quality of crude palm oil produced by smallholder processors in Rivers State, Nigeria. Niger J Agric Food Environ 8(2):28–34

    Google Scholar 

  • Ohimain EI, Izah SC, Jenakumo N (2013a) Physicochemical and microbial screening of palm oil mill effluents for amylase production. Greener J Biol Sci 3(8):307–318. https://doi.org/10.15580/GJBS.2013.8.100913894

    Article  Google Scholar 

  • Ohimain EI, Izah SC, Fawari AD (2013b) Quality assessment of crude palm oil produced by semi-mechanized processor in Bayelsa State, Nigeria. Dis J Agric Food Sci 1(11):34–46

    Google Scholar 

  • Okechalu JN, Dashen MM, Lar PM, Okechalu B, Gushop T (2011) Microbiological quality and chemical characteristics of palm oil sold within Jos Metropolis, Plateau State, Nigeria. J Microbiol Biotechnol Res 1(2):107–112

    Google Scholar 

  • O-Thong S, Prasertsan P, Intrasungkha N, Dhamwichukorn S, Birkeland NK (2008) Optimization of simultaneous thermophilic fermentative hydrogen production and COD reduction from palm oil mill effluent by thermoanaerobicbacterium-rich sludge. Int J Hydrog Energy 33(4):1221–1231. https://doi.org/10.1016/j.ijhydene.2007.12.017

    Article  CAS  Google Scholar 

  • Poku K (2002) Small-scale palm oil processing in Africa. Agriculture and Consumer Protection. Agricultural Services Bulletin, vol 148, p 62

  • SON (2000) Standard Organization of Nigeria. Standards for edible refined palm oil and its processed form, pp 2–5

  • Tagoe SMA, Dickinson MJ, Apetorgbor MM (2012) Factors influencing quality of palm oil produced at the cottage industry level in Ghana. Int Food Res J 19(1):271–278

    CAS  Google Scholar 

  • Vincent CJ, Shamsudin R, Baharuddin AS (2014) Pre-treatment of oil palm fruits: a review. J Food Eng 143:123–131. https://doi.org/10.1016/j.jfoodeng.2014.06.022

    Article  CAS  Google Scholar 

  • WHO (2017) World Health Organisation. Codex Alimentarius International Food Standards, pp 1–13

  • Zahir E, Saeed R, Abdul Hameed M, Yousuf A (2017) Study of physicochemical properties of edible oil and evaluation of frying oil quality by Fourier Transform-Infrared (FT-IR) Spectroscopy. Arab J Chem 10:S3870–S3876. https://doi.org/10.1016/j.arabjc.2014.05.025

    Article  CAS  Google Scholar 

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Acknowledgements

The research did not receive any specific grant from funding agencies.

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Authors and Affiliations

  1. Department of Microbiology/Immunology, Faculty of Biomedical Sciences, Kampala International University, Western-Campus, P.O.Box 71, Ishaka-Bushenyi, Uganda

    Saheed Adekunle Akinola, Rasheed Omotayo Adeyemo, Ibrahim Ntulume & Adamu Almustapha Ailero

  2. Department of Microbiology, Obafemi Awolowo University, Ile-Ife, Osun State, Nigeria

    Saheed Adekunle Akinola, Bridget Okiemute Omafuvbe & Rasheed Omotayo Adeyemo

  3. Department of Paraclinical Sciences, University of Pretoria, Pretoria, South Africa

    Rasheed Omotayo Adeyemo

Authors
  1. Saheed Adekunle Akinola
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  2. Bridget Okiemute Omafuvbe
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  3. Rasheed Omotayo Adeyemo
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  4. Ibrahim Ntulume
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  5. Adamu Almustapha Ailero
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Correspondence to Saheed Adekunle Akinola.

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Akinola, S.A., Omafuvbe, B.O., Adeyemo, R.O. et al. Effect of storage on the quality of processed palm oil collected from local milling points within Ile-Ife, Osun State, Nigeria. J Food Sci Technol 57, 858–865 (2020). https://doi.org/10.1007/s13197-019-04117-6

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