scholarly journals Harvest and post-harvest conditions influencing macauba (Acrocomia aculeata) oil quality attributes

2016 ◽  
Vol 85 ◽  
pp. 63-73 ◽  
Author(s):  
Anderson Barbosa Evaristo ◽  
José Antonio Saraiva Grossi ◽  
Leonardo Duarte Pimentel ◽  
Samuel de Melo Goulart ◽  
Adalvan Daniel Martins ◽  
...  
2016 ◽  
Vol 4 (4) ◽  
pp. 241-253 ◽  
Author(s):  
Hassan H. E Hassan ◽  
◽  
Abd A. A El Rahman ◽  
Liela A. M. M Liela ◽  
◽  
...  

Author(s):  
M. A. Mele, M. Z. Islam, Ho-Min Kang ◽  
Angelo Maria Giuffre

Olive fruit and its oil are in great demand due to its nutritional value, which can be influenced by the pre-and post-harvest factors. The pre-and post-harvest factors are discussed in this article in an effort to recognize as being and investigate the ultimate effect of these factors on the olive fruit and its oil composition. Genetic, agronomic and environmental factors influence olive fruits and olive oil composition. The olive cultivar influences fruit weight, olive oil content, fatty acids, peroxide value, esters, volatile compounds and fatty alcohol content. Chlorophyll content, carotenoids, flavor and volatile compounds vary depending upon geographical area of origin. Environmental conditions have an effect on enzymes, oil composition, fatty acids, microbial activity, esters, flowering, growth and development, ripening rate, insect activity and susceptibility or resistance to diseases. Tree age has an impact on phenol content of olive oil. The boron, nitrogen, potassium, salinity and zinc treatments have an influence on the olive fruit and its oil composition. In addition, the ripening degree, harvesting time has enforcement on olive oil content. Leaf removal and washing of the fruit promote the purity of the olive oil for both chemical and sensorial aspects. A not prolonged fruit crushing together with a not prolonged paste malaxation at a temperature below 27 °C increase the sensory and physicochemical qualities of olive oil. Inappropriate oil extraction promotes the off-flavors in the olive oil. Dark storage helps to retain the chemical and sensorial olive oil quality. The oil quality degrades toward the inside of cooking temperature.


2017 ◽  
Vol 119 (1) ◽  
pp. 190-214 ◽  
Author(s):  
Samir Sayadi ◽  
Yamna Erraach ◽  
Carlos Parra-López

Purpose The purpose of this paper is to translate consumer requirements regarding olive-oil quality attributes into specific olive-growing practices that most contribute to satisfy these attributes. Design/methodology/approach After identifying consumer requirements or needs regarding different attributes of olive-oil quality, through a survey of 439 olive-oil consumers, the authors determine the olive-growing practices that optimally satisfy consumer needs through expert opinions. Finally, the use of expert knowledge to construct the House of Quality or the first matrix of quality function deployment allow the authors to define the relative contribution of the various olive-farming practices to the satisfaction of consumer requirements. Findings The findings have shown that the olive-oil quality attributes most requested by consumers incorporate organoleptic (e.g. acidity, flavour, colour), sociocultural (e.g. creating employment in rural areas, maintenance of the rural population) and environmental ones (environmental externalities). The “separation of olives collected from ground and trees” (separation), “timing of harvesting” (according to a fruit-ripeness index), the “method of the ground harvest” (no picking from the ground), and the “method of tree harvest” (handpicking) were some of the most commonly identified olive-farming practices that contribute the most to meeting consumers’ needs with regard to olive-oil quality. Research limitations/implications The study suggests detailed analyses of the relationships between customer requirements and other agents practices involved in the olive sector (processing industries: mills, distribution, and marketing management, etc.) to more fully investigate the impact of all these practices on consumers’ perceived olive-oil quality attributes. This is the most reliable way to guarantee that the most sought-after quality characteristics are taken into account, not only in the farming stage but also in the various different stages of the olive agri-food chain. Practical implications Findings represent an opportunity in the market value chain to develop a quality olive oil which is more oriented towards the consumer and able to face future segmentations in the market. This is one of the main innovative features of this study, as it offers “good practice” guidelines to agents of the olive-oil sector from the consumer perspective. Social implications This study provides positive implications to consumers, providing them important tools to make an informed choice, and producers and marketers helping the design of production strategies to optimally satisfy the consumer preference with regard to olive-oil quality, and attain a competitive advantage by adding value to the product. Originality/value This paper is regarded as the pioneer in the literature translating the “consumer voice” regarding olive-oil quality into specific olive-growing practices “good-practices guidelines”. Thus, the relevant required quality olive-oil attributes should be clearly described on the label, to enable consumers to identify the quality features and make an informed choice. Furthermore, to meet consumers’ needs, the olive-oil sector should focus on the olive-growing practices that optimally satisfy consumer requirements concerning olive-oil quality attributes. This would help to improve legitimacy and boost public support for the Common Agricultural Policy subsidies for the agricultural sector in general, and the olive sector in particular. The findings are particularly valuable in helping policy makers to design marketing strategies to improve the sustainability and competitiveness of Spanish olive oil.


2013 ◽  
Vol 54 (2) ◽  
pp. 2016-2024 ◽  
Author(s):  
Carla S.P. Santos ◽  
Rebeca Cruz ◽  
Sara C. Cunha ◽  
Susana Casal

2018 ◽  
pp. 05-08
Author(s):  
P. POONKODI, A. ANGAYARKANNI ◽  
R. VIJAYAKUMAR, A. BALAKUMAR

A field experiment was conducted at farmer`s field in Sivapuri village, Chidambaram taluk, Cuddalore district, Tamil Nadu to study the effect of inorganic fertilizers and pressmud compost on soil properties, yield and quality of bhendi cultivar Arka anamika as a test crop. The experimental soil was sandy clay loam with a pH of 7.20, EC of 0.64 dSm-1 and CEC of 19.20 c mol (p+) kg-1. The results of the experiment clearly revealed that the application of 100% recommended dose of fertilizer+15 tonnes of pressmud compost ha-1 (T4) registered the maximum fruit and stover yield of bhendi the same treatment T4 improved the quality attributes of bhendi viz., crude protein content, ascorbic acid content and crude fibre content. The available N, P, K and S content in the post harvest soil was maximum in the treatment T4. This treatment was followed by application of 75% recommended dose of fertilizer+15 tonnes of pressmud compost ha-1 (T7) regarding yield and quality attributes, as well as available nutrients status of post harvest soil. However, these two treatments were comparable to each other.


Author(s):  
Simone Palma Favaro ◽  
Crissia Fernanda Tapeti ◽  
Cesar Heraclides Behling Miranda ◽  
Gabrielly Ciaconini ◽  
Maria Amélia M Miyahira ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document