scholarly journals When will food price bubbles burst?

2018 ◽  
Vol 64 (No. 12) ◽  
pp. 566-573
Author(s):  
Xiao-Qing WANG ◽  
Chi-Wei SU ◽  
Ran TAO ◽  
Oana-Ramona LOBONŢ
Keyword(s):  
Food System ◽  
Supply And Demand ◽  
Supporting Evidence ◽  
Practical Application ◽  
Asset Pricing Model ◽  
Price Bubbles ◽  
Augmented Dickey Fuller ◽  
Food Market ◽  
Speculative Trading ◽  
Global Food

This paper examines whether there are multiple explosive bubble episodes in international food market by employing the Generalised Supremum Augmented Dickey-Fuller (GSADF) test. This method is particularly suitable for practical application of time series and provides an innovative consistent date-stamping strategy for the origination and termination of bubble episodes. Our results show that there are four explosive bubble episodes mostly accompanied by huge price volatilities during 1990–2017, which is largely in line with the asset pricing model (Gürkaynak 2008). The exuberance and collapse of bubble episodes can be explained by imbalance between supply and demand, depreciation of U.S. dollar, financial crisis and speculation. Our findings also provide supporting evidence for the Masters hypothesis that tremendous buying pressure from index investments contributes to substantial bubble episodes. The authorities should accurately identify bubble episode and monitor its evolving process, which is propitious to achieve the effective stabilisation of global food system. Particularly, restrictions on excessive speculative trading should be arranged under extreme market situations in order to forestall the explosion of multiple food bubbles.

scholarly journals Do natural rubber price bubbles occur?

2019 ◽  
Vol 65 (No. 2) ◽  
pp. 67-73 ◽  
Author(s):  
Chi-Wei Su ◽  
Lu Liu ◽  
Ran Tao ◽  
Oana-Ramona Lobonţ
Keyword(s):  
Time Series ◽  
Natural Rubber ◽  
Supply And Demand ◽  
Oil Prices ◽  
Climatic Changes ◽  
Price Bubbles ◽  
Augmented Dickey Fuller ◽  
Multiple Bubbles ◽  
Market Fundamentals ◽  
The Stability

In this paper, we employ the Generalized Supremum Augmented Dickey-Fuller test in order to identify the existence of multiple bubbles in natural rubber. This approach is practical for the using of time series and identifies the beginning and end points of multiple bubbles. The results reveal that there are five bubbles, where exist the divergences between natural rubber prices and their basic values on account of market fundamentals. The five bubbles are related to imbalance between supply and demand, inefficiencies of smallholders market, oil prices, exchange rate and climatic changes through analyses. Thus, the corresponding authorities are supposed to identify bubbles and consider their evolutions, which is beneficial to the stability of natural rubber price.

scholarly journals Public health nutrition and food policy

2004 ◽  
Vol 7 (5) ◽  
pp. 591-598 ◽  
Author(s):  
Martin Caraher ◽  
John Coveney
Keyword(s):  
Public Health ◽  
Food Choice ◽  
Food System ◽  
Food Policy ◽  
Food Choices ◽  
Public Health Nutrition ◽  
Food Market ◽  
The Individual ◽  
Developed World ◽  
Global Food

AbstractFood in its many manifestations allows us to explore the global control of health and to examine the ways in which food choice is moulded by many interests. The global food market is controlled by a small number of companies who operate a system that delivers ‘cheap’ food to the countries of the developed world. This ‘cheap’ food comes at a price, which externalises costs to the nation state in terms of health consequences (diabetes, coronary heart disease and other food-related diseases) and to the environment in terms of pollution and the associated clean-up strategies. Food policy has not to any great extent dealt with these issues, opting instead for an approach based on nutrition, food choice and biomedical health. Ignoring wider elements of the food system including issues of ecology and sustainability constrains a broader understanding within public health nutrition. Here we argue that public health nutrition, through the medium of health promotion, needs to address these wider issues of who controls the food supply, and thus the influences on the food chain and the food choices of the individual and communities. Such an upstream approach to food policy (one that has been learned from work on tobacco) is necessary if we are seriously to influence food choice.

scholarly journals IMPACT OF CORONAVIRUS COVID-19 ON THE FOOD SYSTEM

2021 ◽  
Vol 19 (4) ◽  
pp. 121-129
Author(s):  
Eulalia Skawińska ◽  
Romuald Zalewski
Keyword(s):  
Food Security ◽  
Food Safety ◽  
Food System ◽  
Secondary Data ◽  
Research Problem ◽  
Global Food Security ◽  
Food Supply Chains ◽  
Food Market ◽  
The Impact ◽  
Global Food

The article contributes to the theory of sustainability. It aims to analyse the impact of COVID-19 on global food security and its role in changing food supply chains, with a particular focus on international chains. The research is presented in several sections. The analytical portion discusses the impact of the SARS-CoV-2 epidemiological crisis on the global food market. The state of food safety is then presented, taking into account the quantitative and qualitative aspects. Next, the aspect of the economic availability of food is examined, as well as the important role that international food chains play in shaping food safety. All sections include the results of an analysis of international secondary data on food security under the influence of an ongoing pandemic. The stated objective of the work was achieved and the questions that formulate the research problem were answered. Finally, the need for further normative studies was identified.

scholarly journals Seaweeds As a “Palatable” Challenge between Innovation and Sustainability: A Systematic Review of Food Safety

2021 ◽  
Vol 13 (14) ◽  
pp. 7652
Author(s):  
Giuseppe Cavallo ◽  
Chiara Lorini ◽  
Giuseppe Garamella ◽  
Guglielmo Bonaccorsi
Keyword(s):  
Heavy Metals ◽  
Systematic Review ◽  
Food System ◽  
Meta Analysis ◽  
Anthropogenic Factors ◽  
Novel Foods ◽  
Food Shortages ◽  
Polluted Sites ◽  
The Impact ◽  
Global Food

Moderate or severe food insecurity affect 2 billion people worldwide. The four pillars of food security (availability, access, use and stability) are in danger due to the impact of climatic and anthropogenic factors which impact on the food system. Novel foods, like seaweeds, have the potential to increase food yields so that to contribute in preventing or avoiding future global food shortages. The purpose of this systematic review was to assess microbiological, chemical, physical, and allergenic risks associated with seaweed consumption. Four research strings have been used to search for these risks. Preferred Reporting Item for Systematic Reviews and Meta-analysis (PRISMA) guidelines were applied. Finally, 39 articles met the selected criteria. No significant hazards for microbiological, allergenic, and physical risks were detected. Regarding chemical risk, algae can accumulate various heavy metals, especially when harvested in polluted sites. Cultivating seaweeds in a controlled environment allows to avoid this risk. Periodic checks will be necessary on the finished products to monitor heavy metals levels. Since the consumption of algae seems to be on the rise everywhere, it seems to be urgent that food control authorities establish the safety levels to which eating algae does not represent any risk for human health.

Possibilities of Using Waste after Pressing Oil from Oilseeds for Energy Purposes

2016 ◽  
Vol 20 (1) ◽  
pp. 45-54 ◽  
Author(s):  
Magdalena Kachel-Jakubowska ◽  
Artur Kraszkiewicz ◽  
Marta Krajewska
Keyword(s):  
Fossil Fuels ◽  
Calorific Value ◽  
Commodity Markets ◽  
Solid Biofuels ◽  
Food Market ◽  
Good Energy ◽  
Policy Measures ◽  
Environmental Goals ◽  
National Governments ◽  
Global Food

AbstractCurrently, many countries are establishing goals for substituting fossil fuels with biomass. This global trade in solid biofuels, which is to some extent already taking place, will have a major impact not only on other commodity markets like vegetable oils or animal fodder but also on the global land use change and on environmental impacts. It demonstrates the strong but complex link between biofuels production and the global food market, it unveils policy measures as the main drivers for production and use of biofuels and it analyzes various sustainability indicators and certification schemes for biofuels with respect to minimizing the adverse effects of biofuels. Biomass is seen as a very promising option for fulfilling the environmental goals defined by the European Commission as well as various national governments. We have measured selected physicochemical properties of several the most common oilseeds and the residue materials in the form of cakes, moisture, fat, heat of combustion, the calorific value and ash content. The results showed that the considered plants and waste derived therefrom can be a good energy source. Examples include sunflower oilcake, sesame, pumpkin and rapeseed cake, for which the calorific value amounted to respectively: 28.17; 27.77; 26.42 and 21.69 MJ·kg−1.

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