Cassava post-harvest physiological deterioration: From triggers to symptoms

Zainuddin, Ima Mulyama; Fathoni, Ahmad; Sudarmonowati, Enny; Beeching, John R.; Gruissem, Wilhelm; Vanderschuren, Hervé

doi:10.1016/j.postharvbio.2017.09.004

Cited by 75 publications

(77 citation statements)

References 72 publications

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“…Factors related to cultivation that can easily be modified, such as the harvest age and population density, promote changes in plants, both in morphology and postharvest quality attributes (Andrade et al, 2017;Leskovar, Agehara, Yoo, & Pascual-Seva, 2012;Simões et al, 2010). Recently, some field strategies have been reported to delay PPD in unprocessed cassava roots (Zainuddin et al, 2018). In this study, the authors reviewed superficially the effects of pruning, which increases the sugar/starch ratio and limits scopoletin accumulation, and furthermore they suggested that PPD should be evaluated at different harvest ages, indicating that this factor affects the postharvest quality of the roots.…”

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confidence: 99%

Association of preharvest management with oxidative protection and enzymatic browning in minimally processed cassava

et al. 2019

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The aim of this study was to examine oxidative protection and enzymatic browning in the storage of minimally processed cassava and their relationship with population density and harvest age. Population densities were 1.0, 1.25, 1.5, and 1.75 plants m−2. After being harvested at 300, 360, or 420 days after planting, cassava were minimally processed and stored at 5 ± 2°C. It was observed that superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) play key roles in the tolerance of young roots to browning. Planting density, however, does not appear to be a key factor modulating the activity of the enzymes studied. Practical applications Younger harvested cassava roots, harvested at 300 days, are more tolerant to enzymatic browning. This appears to be in part due to enzymatic activity modulation of the SOD, CAT, and POD enzymes. In addition, it has been demonstrated that agronomic techniques aimed at increasing productivity, such as increasing the planting density of cassava, do not alter the biomarkers of postharvest quality. In summary, evidence that field management may be an efficient approach to improving the conservation of minimally processed cassava is provided. We believe that the findings of this paper will be of great interest regarding the influence of field management on the postharvest quality of freshly cut cassava and will also provide applicable results relating to its production chain.

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confidence: 99%

Association of preharvest management with oxidative protection and enzymatic browning in minimally processed cassava

et al. 2019

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“…Genetic transformation in cassava was initially restricted to a single model genotype but the array of germplasm that can be genetically transformed has been expanded. Many traits have been considered for genetic transformation: resistance to cassava brown streak disease (CBSD) and CMD [31][32][33][34][35][36][37]; enhanced nutritional quality of the roots including high carotenoids, Fe, Zn, proteins, and the reduction in cyanogenic glucosides [38][39][40][41][42]; quantity and quality of starch [43][44][45]; reduction of Postharvest Physiological Deterioration [46][47][48]; resistance to arthropods [49];…”

Section: Genetic Transformation and Gene Editingmentioning

confidence: 99%

Excellence in Cassava Breeding: Perspectives for the Future

2020

Crop Breed Genet Genom.

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Cassava (Manihot esculenta Crantz) is a major tropical crop. Regarded as an orphan crop a few decades ago, it now receives considerable attention from governments, industry and agencies investing in agricultural research. As a result, the cassava community generates vast amounts of information and develops useful technologies and products. This positions cassava as a key industrial commodity and a reliable food security staple. Significant genetic gains have been achieved through the early 2000s. Gains are particularly noticeable under better agronomic conditions, as was the case for the green revolution of cereals. However, further gains obtained in the past two decades have not been as impressive. Cassava breeding cycle is long, and its multiplication rate slow. Therefore, it takes no less than 8 years to develop a new variety. Cassava breeding is based on the use of heterozygous progenitors which has important drawbacks. One of them is the impossibility to implement conventional back-crossing. Cassava researchers have recently introgressed a single recessive trait (amylose-free starch) into elite varieties. This was unprecedented in cassava and revealed important problems incorporating single genes into elite varieties. In the absence of backcross, the process required essentially the development of new varieties, which exposed strong effects of undesirable genetic linkages. Breeding approaches to overcome the problems of introgressing single-gene traits have been developed and will be implemented to introduce resistance to cassava mosaic disease into SE Asia breeding populations. These methods will also be useful to exploit recently identified immunity to cassava brown streak disease, a serious problem currently restricted to Africa. Trait introgression is an important process in crop breeding and will be more important in the future as gene discovery and editing identify useful genes. This article consolidates and integrates information from cassava and other crops and proposes

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“…Cassava, also known as manioc or tapioca (Manihot esculenta Crantz), is a staple food for almost a billion people living in tropical areas of Africa, Latin America, Oceania and Asia [6][7][8]. Cassava roots have been considered the "food for the poor", comprising more than 80% of starch [6] and are an important food source in tropical areas, including sub-Saharan countries, due to drought resistance and the ability to grow in marginal land [6,7,9].…”

Section: Introductionmentioning

confidence: 99%

Enzymatic Activity Prediction Using Time-Domain Nuclear Magnetic Resonance (TD-NMR) and Multivariate Analysis: A Case Study Using Cassava Roots

et al. 2018

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Time-domain nuclear magnetic resonance (NMR) has been widely used in food science. In this work, we demonstrate that the NMR decay obtained with the Carr-Purcell-Meiboom-Gill (CPMG) sequence can be used to estimate the peroxidase activity (PA) in cassava roots. This enzyme has been involved in post-harvest physiological deterioration (PPD), which limits the storage of fresh cassava to a few days. Cassava is a staple food for almost one billion people in tropical areas in Americas, Africa and Asia. A multivariate method using CPMG data and reference values of PA from a standard biochemical assay was built with 216 measurements for non-refrigerated and refrigerated samples of cassava roots. The figures of merit of the global partial least squares model using both types of roots showed a 0.06 μmol min −1 limit of detection (LOD) and a 0.2 μmol min −1 limit of quantification (LOQ) for PA, with 0.4 [intensity (a.u.)/(μmol min −1)] sensitivity and a standard error of cross-validation (SECV) of 0.7 μmol min −1. All of the results demonstrated that TD-NMR has the potential to predict PA in cassava roots that is indicative of the PPD problem.

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Cassava post-harvest physiological deterioration: From triggers to symptoms

Cited by 75 publications

References 72 publications

Association of preharvest management with oxidative protection and enzymatic browning in minimally processed cassava

Association of preharvest management with oxidative protection and enzymatic browning in minimally processed cassava

Excellence in Cassava Breeding: Perspectives for the Future

Enzymatic Activity Prediction Using Time-Domain Nuclear Magnetic Resonance (TD-NMR) and Multivariate Analysis: A Case Study Using Cassava Roots

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