Forthcoming articles


International Journal of Postharvest Technology and Innovation


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International Journal of Postharvest Technology and Innovation (5 papers in press)


Regular Issues


  •   Free full-text access Open AccessShelf life extension of sweetpotato roots using household-level storage method
    ( Free Full-text Access ) CC-BY-NC-ND
    by Richard Atinpoore Atuna, Francis Kweku Amagloh, Edward Ewing Carey 
    Abstract: The short shelf life of sweetpotato affects its potential use as a food and nutrition security crop. In this study, three sweetpotato cultivars, OFSP-1, OFSP-2 and WFSP were investigated for perishability (weight loss, weevil damage, rot and sprouts) using two storage methods, following pre- or postharvest curing treatments. The curing treatments were in-ground curing (dehaulming) before harvest; field-piled curing after harvesting; and no curing. The roots were further stored by heaping and covering with moistened straw, or in earthen sand boxes. The storage experiment was carried out in a thatched hut under ambient conditions in northern Ghana. To evaluate possible relationships between wound healing and shelf life, the roots that were being cured using the field-piled method were deliberately injured and wound healing assessed over a 6-day period. Over an 11 week storage period, OFSP-2 recorded the highest weight loss (9.7%; p = 0.04), weevil damage (3.7%; p = 0.49) and rot (21%; p < 0.001). Weight loss and weevil damage were respectively 1.8-times and 23-times higher in the roots stored by heap method compared with those in the sand box method. However, no significant differences were found between storage methods in terms of rot. Sprouts in the sand box storage were about 3-times more than the heap storage. Except for WFSP, the lignification score increased gradually to the 3rd or 4th day for OFSP-2 and OFSP-1 respectively before levelling off. The sand box method improved the shelf life of sweetpotato roots up to 11 weeks compared to 9 weeks in the heap storage. Therefore, the sand box storage can be used to extend the shelf life of sweetpotato cultivars at the household-level.
    Keywords: Dehaulming; Lignification; Sand box; Wound healing; Sweetpotato.
    DOI: 10.1504/IJPTI.2017.10008267
    by Oluwafemi Caleb, Amarachi Uchechukwu-Agua, Umezuruike Linus Opara 
    Abstract: This study investigated the effects of packaging and storage conditions (23 and 38
    Keywords: Cassava flour; pasting properties; swelling power; water binding capacity.

  • Effect of storage temperature on post harvest quality of strawberry (Fragaria x ananassaDuch) genotypes   Order a copy of this article
    by M. Moshiur Rahman, M. Mizanur Rahman 
    Abstract: A study to investigate the effect of storage temperature on post-harvest quality of strawberry was conducted in Bangladesh during the winter season of 2010-2011 and 2011-2012. Five strawberry genotypes viz. Sweet Charlie, Festival, Camarosa, FA 008 and BARI Strawberry-1, and four storage temperature (10, 70, 140 and 250C) were used. Per cent fruit decay, weight losses and visual appearance of strawberry were found up to the mark when fruits were stored at 10C and that was significantly deteriorated when stored at higher temperature and declined maximum at ambient condition. During storage, the TSS content of strawberry increased gradually and it was found to be slow at 10C and rapid under ambient temperature. The ascorbic acid content of fresh fruits was decreased during storage, but the rate of reduction during storage was very slow at 10C, but higher losses were noted at ambient condition.
    Keywords: Strawberry; Post harvest quality; Storage temperature; Freshness; Weight loss; TSS; Ascorbic acid.

  • Assessment of Postharvest Losses and Marketing of Onion in Ethiopia   Order a copy of this article
    by Victor Afari-Sefa, Bezabih Emana, Dereje Kebede, Ngoni Nenguwo, Amsalu Ayana, Hedija Mohammed 
    Abstract: Onion plays a key role in Ethiopian cuisine and income generation for smallholder farmers. Postharvest loss is a major constraint hindering successful onion production, marketing and distribution in Ethiopia. This study was designed to provide quantitative and qualitative information on postharvest losses of onion in two districts (Bora and Dugda) of Oromia region in Ethiopia. A total of 155 onion producers and 56 traders were interviewed to collect primary data on postharvest losses of onion. The survey data were complemented with measurement of losses and qualitative data collected through focus group discussion and key informant interviews augmented with secondary data. The results revealed that onion is produced under rain-fed conditions as a sole crop or grown 2-3 times per year under irrigation. Male headed households in the younger age category are the major producers as they may be more successful in establishing good market linkages and networks, use market information more effectively and may be more willing to take the risk involved in vegetable production than older farmers. Younger farmers also had better education with 77% of the sampled onion producers having received formal education. A significant proportion (98%) of the harvested onion is meant for sale in various towns within Ethiopia, implying that production of the crop is commercially driven and access to market is crucial to improve household income. Over 30% postharvest losses were registered mainly because of poor cultural practices and disease attack during production and harvesting as well as poor handling practices, storage and transport along the value chain. The postharvest losses resulted in a 61% reduction of producers price (income) during wet season. To reduce the postharvest losses, a series of interventions are needed, including skills building to improve pre-harvest crop management practices, improving capacity for postharvest handling including cool storage, market information, facilities and services and value chain upgrading.
    Keywords: Onion; postharvest loss; Ethiopia; value chain; marketing.

    by Yusto Yustas, Cuthbert Kimambo 
    Abstract: Evaluation of solar dryer performance is an essential step in the selection process of the most efficient and effective solar dryer design for a particular application of solar drying. The evaluation of solar dryer performance can be carried out in various ways and there are no standardized performance evaluation procedures available for the solar dryers. This paper describes the application of an evaluation procedure of solar dryer performance, which is based on the procedure that was initially developed by Leon et al., (2002) and arguably one of the most reliable among existing ones. The procedure was validated by the use of a scaled down solar tunnel dryer model. The solar tunnel dryer was tested alongside with open sun dryer as a control measure on drying wet cassava grates. Tested parameters of dryer were based on the dryers physical feature, thermal performance and cost analysis. The test results confirm the reliability of the procedure used to evaluate performance of the scaled down model of the dryer. Therefore, the procedure of performance evaluation demonstrated is recommended for application in similar situations.
    Keywords: Performance; evaluation; mixed mode; natural convection; tunnel; solar dryer.