Background Oil palm, Elaeis guineensis, is by far the most important global oil crop, supplying about 40% of all traded vegetable oil. Palm oils are key dietary components consumed daily by over three billion people, mostly in Asia, and also have a wide range of important non-food uses including in cleansing and sanitizing products. Main body Oil palm is a perennial crop with a > 25-year life cycle and an exceptionally low land footprint compared to annual oilseed crops. Oil palm crops globally produce an annual 81 million tonnes (Mt) of oil from about 19 million hectares (Mha). In contrast, the second and third largest vegetable oil crops, soybean and rapeseed, yield a combined 84 Mt oil but occupy over 163 Mha of increasingly scarce arable land. The oil palm crop system faces many challenges in the 2020s. These include increasing incidence of new and existing pests/diseases and a general lack of climatic resilience, especially relating to elevated temperatures and increasingly erratic rainfall patterns, plus downstream issues relating to supply chains and consumer sentiment. This review surveys the oil palm sector in the 2020s and beyond, its major challenges and options for future progress. Conclusions Oil palm crop production faces many future challenges, including emerging threats from climate change and pests and diseases. The inevitability of climate change requires more effective international collaboration for its reduction. New breeding and management approaches are providing the promise of improvements, such as much higher yielding varieties, improved oil profiles, enhanced disease resistance, and greater climatic resilience.

This article describes the challenges of regulating and monitoring traceability and certification systems, and of ensuring the safety and authenticity of foodstuffs imported into Europe, particularly focusing on palm oils. Several measures have been implemented within palm oil supply chains to ensure that traceability can be monitored. However, these supply chains can be highly complex and, more often than not, full traceability is not achievable for stakeholders who only have access to existing systems. In Europe, measures for authenticity of palm oils are not presently as robust as those for other vegetable oils, which means that sometimes unsafe and inauthentic palm oils, often already incorporated into other products, can make their way onto supermarket shelves for unsuspecting consumers. Such instances are usually rare and are normally detected before products are purchased by consumers. Nevertheless, it is still the case that the addition of illegal and potentially harmful additives to palm oils destined for export to Europe is a regular occurrence, alerts for which can be found on the Rapid Alert System for Food and Feed (RASFF) portal. As the European Union has committed to only accept authenticated “sustainably sourced” palm oils, it is even more important to ensure that such imported oils are really from the declared source, preferably via proven analytical methods. This makes it more important that accurate and robust techniques are developed and implemented for verifying the provenance and authenticity of palm oils and their downstream products. Here, we review the underlying regulatory framework relating to traceability and authentication and assess some new and emerging chemically-based technologies that should contribute to improving the monitoring of palm oil and other vegetable oil supply chains in Europe and elsewhere.

Objective The addition of residual oils such as palm fibre oil (PFO) and sludge palm oil (SPO) to crude palm oil (CPO) can be problematic within supply chains. PFO is thought to aggravate the accumulation of monochloropropanediols (MCPDs) in CPO, whilst SPO is an acidic by-product of CPO milling and is not fit for human consumption. Traditional targeted techniques to detect such additives are costly, time-consuming and require highly trained operators. Therefore, we seek to assess the use of gas chromatography–ion mobility spectrometry (GC–IMS) for rapid, cost-effective screening of CPO for the presence of characteristic PFO and SPO volatile organic compound (VOC) fingerprints. Results Lab-pressed CPO and commercial dispatch tank (DT) CPO were spiked with PFO and SPO, respectively. Both additives were detectable at concentrations of 1% and 10% (w/w) in spiked lab-pressed CPO, via seven PFO-associated VOCs and 21 SPO-associated VOCs. DT controls could not be distinguished from PFO-spiked DT CPO, suggesting these samples may have already contained low levels of PFO. DT controls were free of SPO. SPO was detected in all SPO-spiked dispatch tank samples by all 21 of the previously distinguished VOCs and had a significant fingerprint consisting of four spectral regions. Electronic supplementary material The online version of this article (10.1186/s13104-019-4263-7) contains supplementary material, which is available to authorized users.

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