## 1 Introduction  
The global food crisis in 2008 had a significant and historical impact. It was reported that 963 million people suffered from hunger, and food crises occurred in poor and developing countries [1]. World food prices continued to increase for almost all commodities during the 2007-2008 crisis, and prices jumped up sharply, and now the level of price volatility is getting higher. Global food security is one of the leading development priorities of every country, notably countries facing the threat of environmental changes [2]. It also causes a reduction in the level of food availability, while populations requiring access to food continue to increase [3]. Market instability from international agricultural products also makes it difficult to access food supplies [4, 5]. In the concept of sustainable development, it is necessary to integrate environmental systems into economic and social policies [6], including developing the community's ability to access food. Food security development must not compromise the ability of future generations to meet their needs. The volatility of food prices during the global crisis caused food uncertainty to increase [7, 8]. The most significant impact is felt by poor people in developing countries, whose food reserves depend on imports [9]. Population growth is always increasing and causing a growing need for more food [10]. If the agricultural food production capacity reaches the environmental limit, it is feared that food production and ecological conditions will be harmed [11]. Food security can be achieved if the entire population has daily access to food with adequate nutrition. Changesin the level of prosperity will also shift the need for food nutrition that must be used to maintain food security [12]. The Food and Agriculture Organization of the United Nations (FAO) in 2019 stated that globally, one in nine people experience hunger or difficulty accessing food with proper nutrition. Increasing food production is conventionally carried out by growing more in the agricultural areas, which means that it becomes a threat to biodiversity [13]. The food system is the sector that contributes the most to greenhouse gas emissions. Due to the addition of agricultural land for food by employing deforestation and the food production process, which involves a distribution process that requires energy and chemicals to suppress crop pests [14], FAO provided recommendations to all countries in the world to support the realization of sustainable food by carrying out efficiency in the food system, especially in the production process, creating policies to reduce consumption rates, and managing the system's social economy while still referring to natural sustainability [15]. Sustainable food refers to the growth of food supply based on environmental sustainability [16]. Currently, a lot of food production has reached its limits and exceeds environmental capacity. Nitrogen synthesis and phosphorus use that have passed threshold levels, land-use changes, and human dependence on fossil energy contribute to increased greenhouse gas emissions. Food production from agriculture is also a driver of biodiversity loss [13]. The global food system contributes to greenhouse gas emissions from agri-food production, processing, and distribution to retail and food preparation for households [17]. In addition, the increase in food industrialization also has a broad impact on the environment. Policymakers are increasingly aware of the need to resolve food system problems. At the same time, they are also faced with an increased burden of food security, specifically in terms of nutrition and its relationship to global population growth. Sustainable food tries to solve two problems: how to support both a sustainable environment and the food system [18]. Price volatility is one of the signals in detecting market instability, which can impact people's welfare.