Bandara, D.M.S.P.
(Institute of Post Harvest Technology)
,
Dissanayake, C.A.K.
(Institute of Post Harvest Technology)
,
Dissanayake, T.M.R.
(Institute of Post Harvest Technology)
,
Rathanayake, H.M.A.P.
(Institute of Post Harvest Technology)
,
Senanayake, D.P.
(Institute of Post Harvest Technology)
Purpose: Mee (Madhuca longifolia) is an economically important tree growing throughout Sri Lanka. Its importance is mainly attributed to its oil with high nutritional and medicinal values. However, an inefficient extraction method limits its use. This study revealed the possibility of extracting oil...
Purpose: Mee (Madhuca longifolia) is an economically important tree growing throughout Sri Lanka. Its importance is mainly attributed to its oil with high nutritional and medicinal values. However, an inefficient extraction method limits its use. This study revealed the possibility of extracting oil from mee seeds by using a screw-type oil expeller. Methods: A popular screw-type oil expeller was used in the experiment. Extract bar clearance and speeds of the main spiral shaft were altered to increase the oil expelling efficiency of the machine. The quality of refined oil at the optimum oil yield was determined by measuring the refractive index, saponification value, iodine value, unsaponifiable matter, free fatty acid, and specific gravity. Results: An optimum yield of 35% oil was obtained when the machine capacity was 30 kg/h and energy consumption was 0.13 kWh/kg. This optimum machine condition was observed at an extract bar clearance of 0.5 mm and a main spiral shaft speed of 90 rpm. The refractive index, saponification value, iodine value, unsaponifiable matter, free fatty acid, and specific gravity of the oil were 1.4, 203, 59, 3.5%, 0.2%, and 0.907 g/cm3 respectively. Color of the mee oil was closer to yellow, which is revealed by the lightness value (L) of 24.93 and positive value (b) of 11.81. Conclusion: The screw-type oil expeller can be used for economically extracting mee oil on a commercial scale.
Purpose: Mee (Madhuca longifolia) is an economically important tree growing throughout Sri Lanka. Its importance is mainly attributed to its oil with high nutritional and medicinal values. However, an inefficient extraction method limits its use. This study revealed the possibility of extracting oil from mee seeds by using a screw-type oil expeller. Methods: A popular screw-type oil expeller was used in the experiment. Extract bar clearance and speeds of the main spiral shaft were altered to increase the oil expelling efficiency of the machine. The quality of refined oil at the optimum oil yield was determined by measuring the refractive index, saponification value, iodine value, unsaponifiable matter, free fatty acid, and specific gravity. Results: An optimum yield of 35% oil was obtained when the machine capacity was 30 kg/h and energy consumption was 0.13 kWh/kg. This optimum machine condition was observed at an extract bar clearance of 0.5 mm and a main spiral shaft speed of 90 rpm. The refractive index, saponification value, iodine value, unsaponifiable matter, free fatty acid, and specific gravity of the oil were 1.4, 203, 59, 3.5%, 0.2%, and 0.907 g/cm3 respectively. Color of the mee oil was closer to yellow, which is revealed by the lightness value (L) of 24.93 and positive value (b) of 11.81. Conclusion: The screw-type oil expeller can be used for economically extracting mee oil on a commercial scale.
* AI 자동 식별 결과로 적합하지 않은 문장이 있을 수 있으니, 이용에 유의하시기 바랍니다.
제안 방법
Complete randomized design was used in designing the experiments. The data gathered were analyzed by using analysis of variance (ANOVA) by the Statistical Analysis System (SAS).
As the shaft rotates, the screw at the discharge end of the assembly moves the oil seed that is fed through the hopper to the inlet where it is pressed. In this study, mee seeds were fed into the hopper as a 4-kW motor continuously rotated the screw shaft with variable speed adjustment. In this experiment, a popular Chinese screw-type oil expeller machine was used; its screw shaft had a pitch of 25 mm, and it had an internal barrel of dimensions 75 × 315 mm (Figure 3 and Figure 4).
Trials were conducted with three replicates. To evaluate the machine performance, the crude oil yield, machine capacity, and energy consumption at different screw shaft speeds were calculated (Table 2).
대상 데이터
In this experiment, a popular Chinese screw-type oil expeller machine was used; its screw shaft had a pitch of 25 mm, and it had an internal barrel of dimensions 75 × 315 mm (Figure 3 and Figure 4).
After making these modifications, trials were conducted by changing the speed ratios of the machine as per the speeds listed in Table 1. Trials were conducted with three replicates. To evaluate the machine performance, the crude oil yield, machine capacity, and energy consumption at different screw shaft speeds were calculated (Table 2).
데이터처리
Differences between treatment means were obtained via Duncan’s multiple range test at 5% significance level (p < 0.05).
Complete randomized design was used in designing the experiments. The data gathered were analyzed by using analysis of variance (ANOVA) by the Statistical Analysis System (SAS). Percentage data were transformed
이론/모형
Before use, seeds were steamed for 30 min. The initial moisture content of the sample was determined by the oven method according to the AOAC (1999) standard for oil seed. According to this method, the samples were dried in the oven for 3 h at 105 ± 3°C.
참고문헌 (14)
Akshatha, K. N., S. M. Murthy and N. Lakshmidevi. 2013. Ethnomedical uses of Madhuca longifolia. A Review. International Journal of Life Science and Pharma Research 3:44-53.
Animal and vegetable fats and oils ISO 5509:1978. International Organization for Standardization.
AOAC. 1999. Official method of analysis. 16th ed. Washington DC: Association of Analytical Chemist.
Bandara, D. M. S. P., T. M. R. Dissanayake, H. M. A. P. Rathnayake, and D. P. C. Swarnasiri. 2014. Performance Evaluation of a Screw Type Oil Expeller for Extraction of Sesame Oil. Engineer: Journal of the Institution of Engineers, Sri Lanka 47:17-22.
Kureel, R. S., R. Kishor, Dev Dutt and P. Ashutosh. 2009. Mahua: A potential tree borne oilseed. National oilseeds & vegetable oils development board, Ministry of agriculture, Govt. of India 1:21.
Maheshwari, J. K. Processing and utilization of perennial vegetation in the arid-zone of India available at http://www.fao.org/docrep/t0115e/t0115e0g.htm. [Accessed on 15.10.2015].
Methods for analysis of animal and vegetable fats and oils, SLS 313:2009. 2009. Sri Lanka Standards Institute, Colombo, Sri Lanka.
Mishra S. and S. Padhan. 2013. Madhuca lonigfolia (Sapotaceae). A Review of its traditional uses and nutritional properties. International Journal of Humanities and Social Science Invention 2:30-36.
Mohamed, F. R., G. Sharanabasappa, S. Parmjyothi, M. Seshagiri and J. T. Moersel. 2009. Profile and levels of fatty acids and bioactive constituents in mahua butter from fruit-seeds of buttercup tree [Madhuca longifolia (Koenig)] European Food Research and Technology 222:710-718.
Navindgi, M. C., M. Dutta and B.S.P. Kumar. 2012. Comparative experimental investigation of combustion, performance and emission in a single cylinder thermal barrier coated diesel engine using diesel and neem biodiesel. International Journal of Engineering Research and Development 3(2):12-20.
Romon, M., M. C. Nuttens and N. Thaeret. 1995. Comparison between fat intake assessed by a 3-day food record and phospholipids fatty acid composition of red blood cells: results from monitoring of cardiovascular disease-Lille study. Metabolism 44(9):1139-45.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.