scholarly journals Quality Parameters of Sunflower (Helianthus annuus L.) Seeds and Seedlings under Various Storage Duration and Seed Invigoration

Author(s):  
Rupa Das ◽  
Saikat Biswas ◽  
A. K. Mandal
2017 ◽  
Vol 32 (3) ◽  
pp. 309
Author(s):  
Luana Cristina Rabonato ◽  
Rívia Darla Alvares Amaral ◽  
Rafaela De Souza Oliveira ◽  
Roseli Aparecida Ferrari ◽  
Marcelo Antonio Morgano

O objetivo do trabalho foi avaliar a prensagem a frio a partir das amêndoas de girassol alto oleico (AO) para obtenção de óleo extra virgem, biodiesel etílico e farinha proteica. A caracterização química foi realizada utilizando métodos oficiais de análise. O óleo foi extraído utilizando uma prensa helicoidal contínua e obteve-se um rendimento de 40%. O biodiesel etílico foi produzido por reação de transesterificação obtendo-se alto teor de ésteres etílicos (99,2%). Com a remoção total das cascas foi possível produzir um farelo com elevado teor de proteínas (51,6% b.s.). A composição mineral dos grãos, das amêndoas e das cascas de girassol mostrou que nos grãos os elementos de maior incidência foram Fe, Cr e Ni; nas amêndoas S, P, Mg, Cu, Mn e Zn e nas cascas Ca, K, Al, Ba, Sr e Na. Todos parâmetros de qualidade avaliados para o óleo, farinha e biodiesel etílico estão de acordo com a legislação indicando alta qualidade do óleo extra virgem e estabilidade termo-oxidativa, não sendo necessário o seu refino. A prensagem a frio das amêndoas, com ausência total de cascas, permitiu obter coprodutos de alta qualidade para aplicação na indústria alimentícia (óleo extra virgem e farinha proteica) e energética sustentável (cascas e biodiesel).PALAVRAS-CHAVE: Helianthus annuus L., estabilidade termo-oxidativa, composição química, minerais, transesterificação. OBTAINING OIL, FLOUR AND ETHYLIC BIODIESEL FROM COLD PRESSING OF HIGH OLEIC SUNFLOWER KERNELSABSTRACT: The objective of this work was to evaluate the cold pressing from high oleic (HO) sunflower kernels to obtain extra virgin oil, ethylic biodiesel and protein flour. The chemical characterization was performed using official methods of analysis. The oil was extracted using a continuous screw press and the yield was 40%. Ethylic biodiesel was produced by transesterification reaction obtaining a high content of ethyl esters (99.2%). With the total removal of the hulls, it was possible to produce a meal with 51.6% proteins. The mineral composition of the grains, kernels and hulls showed that in the grains the elements of higher incidence were Fe, Cr and Ni; in the kernel were S, P, Mg, Cu, Mn and Zn and in the hulls were Ca, K, Al, Ba, Sr and Na. All quality parameters evaluated for oil, flour and ethylic biodiesel were in accordance with the legislation and indicated high quality and thermo-oxidative stability in extra virgin oil, with no necessity of refining. The removal of the hulls and the cold pressing of the kernels provide the production of high quality co-products for use in the food industry (extra virgin oil and protein flour) and sustainable energy (hulls and biodiesel).KEYWORDS: Helianthus annuus L., oxidative stability, chemical composition, minerals, transesterification.


2018 ◽  
Vol 10 (5) ◽  
pp. 93-98
Author(s):  
Azeem ur Rahman Khalid Muhammad ◽  
Muhammad Ahsan Iqbal Dr ◽  
Zubair Muhammad ◽  
Zafar Amanullah ◽  
Butt Asad ◽  
...  

2008 ◽  
Vol 88 (1) ◽  
pp. 101-109 ◽  
Author(s):  
M. F. Saleem ◽  
B. L. Ma ◽  
M. A. Malik ◽  
M. A. Cheema ◽  
M. A. Wahid

Sowing time and sowing methods are often used to overcome environmental constraints on crop production. Information on the effect of these agronomic techniques on sunflower (Helianthus annuus L.) oil quality is, however, scarce. A field study was conducted to evaluate the effect of sowing dates and planting patterns, and their interaction, on seed yield and oil quality of hybrid sunflower. Sunflower hybrid Hysun-33 was sown at four dates beginning with the first week of August with fortnightly intervals under three planting patterns, viz., flat sowing (60 cm apart lines), ridge sowing (60 cm apart ridges) and bed sowing (90/30 cm) for 2 yr (2002 and 2003). The performance of the August sowing dates was significantly better with respect to yield and yield components than the September-sown crop. Among the three sowing dates in August, there was variable performance of the crop in the 2-yr study. On average, the sowing of sunflower from mid-August to the last week of August yielded better than early August sowing dates. The evaluation of quality parameters revealed greater content of achene oil in the September-sown crop followed by the crop sown in the last week of August. Delayed sowing lowered oleic acid content, but increased stearic and linoleic acid levels. Planting pattern treatments affected head diameter, achenes per head, 1000-achene weight and achene yield. Conclusively, sunflower sown on ridges during the second fortnight of August encountered favourable environmental conditions and gave significantly higher economic yield. Key words: Helianthus annuus , plantingg eometry, plantingpatterns, quality, sowingdates, sunflower yield


2018 ◽  
Vol 53 (3) ◽  
pp. 485-498
Author(s):  
G.P. Kononenko ◽  
◽  
M.I. Ustyuzhanina ◽  
A.A. Burkin ◽  
◽  
...  

2014 ◽  
Vol 2014 (2) ◽  
pp. 83-91
Author(s):  
Alfredo Garcia-Perez ◽  
◽  
Mark Harrison ◽  
Bill Grant ◽  
◽  
...  

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