Jatropha curcas L: A Potential 2G Energy Crop to Produce Biofuel in Bangladesh

Table of Contents

1. Frontmatter

2. Chapter 1. A Sustainable Second-Generation Biomass for Bioenergy

   Kamrun Nahar

   Abstract

   The chapter “Jatropha, a Sustainable Second-Generation Biomass for Bioenergy” emphasizes the necessity for renewable biofuels due to environmental concerns and energy shortages. It highlights non-food jatropha as a second-generation biofuel that can eventually replace fossil fuels. The introduction emphasizes the necessity for renewable energy in densely populated and emerging countries like Bangladesh. This chapter discusses global urbanization and industrialization, fossil fuel-induced energy consumption and environmental deterioration. This makes biofuel research particularly critical. In this chapter, Jatropha is introduced, and its farming’s broader effects are evaluated, from soil moisture and climate change adaptation. Jatropha might address rural energy needs and help local people flourish sustainably, so this chapter illustrates jatropha as a sustainable biofuel with energy security and environmental benefits, especially in developing countries. It advocates adopting jatropha as an energy crop to address the global energy dilemma.

3. Chapter 2. Agricultural Aspects: Phytomorphology, Cultivation Technology and Harvesting

   Kamrun Nahar

   Abstract

   The Chapter “Agricultural Aspects: Botanical Description, Cultivation Technology, and Harvesting,” Jatropha, a flexible energy crop, is described physically and botanically. This chapter covers agronomic aspects, such as plant growth, identification, blooms, fruits, seeds, and methods. Jatropha is cultivated throughout tropical and subtropical Africa and Asia. The 50-year-old plant grows 3–10 m and yields 4–7 kg of seeds. Ovoid fruits grow in Jatropha's female leaf-axil inflorescences. Monoecious plants require honey bees to pollinate rare hermaphroditic flowers. The fruit exocarp dries to reveal three bivalve follicles containing ripe seeds three to four months after blooming. This chapter also explores intercropping Jatropha with other plants for a lucrative, sustainable, and socially acceptable agroforestry system. Plants need pruning, and specialist methods may increase fruit and seed growth. Bioinsecticides and aphid control are examined. Manual and automated Jatropha fruit, seed harvesting, and post-harvest processing for oil extraction and nutritional analysis finish the chapter.

4. Chapter 3. Propagation Technologies: Seedling, Stem Cutting and Grafting

   Kamrun Nahar

   Abstract

   The chapter, “Jatropha Curcas Propagation Technologies: Breeding from Seedling, Stem Cutting, and Grafting,” discusses how to propagate this second-generation biodiesel fuel. Growing Jatropha is covered from seeding to transplanting, instant planting, stem cutting and grafting. The average life span is around 50 years and the plant grows 3–10 m and produces 4–7 kg of seeds. Female leaf-axil inflorescences of Jatropha have ovoid fruits. This chapter also discusses intercropping Jatropha with other plants for profitable, sustainable, and socially acceptable agroforestry. Pruning and particular approaches may boost fruit and seed development. Aphid control and bioinsecticides are explored. Manual and automated Jatropha fruit and seed harvesting, post-harvest oil extraction, and nutritional analysis conclude the chapter. This chapter's extensive study of Jatropha's agricultural application suggests bioenergy possibilities. Seedlings or other biotechnological propagation methods might be used to increase the global availability of jatropha, the sustainable source of 2G biodiesel feedstock species, and the total supply to create fuel. Several techniques, including direct seeding and transplanting, immediate planting (stem cutting), grafting, and tissue culture (Freitas and Barjona in Dissertation. Instituto de Agronomia e Veterinaria, Lisboa, 1906; Nahar and Borna in Asian J Biotechnol Bioresour Technol 2(3):1–8, 2013, ARPN J Sci Technol 3(1):38–42, 2018) are viable options for vegetative propagation and oil production in the plant. The time needed to harvest was shortened in half when cuttings were planted instead of germinating seeds or transplanting. However, this technique is rarely employed by most commercial growers since it does not result in a healthy tap root. Regarding vegetative development, biomass output, and oil content of seeds, sexual propagation by direct seedlings leads to genetic heterogeneity under varied climatic circumstances. This may be because Jatropha has not yet created a system for producing certified seed. Consequently, poor germination, which might include viability, can hinder the capacity to grow plants from seed. It's best to take cuttings from a mother plant at least four or five years old. Grafting reduces the time it takes for a plant to mature while breeding from cutting and tissue culture allows for rapid mass production of plantlets. However, stem/branch cutting or stem/branch antlers do not develop a true tap root, making them less drought and disease-resistant than those propagated from seeds or tissue culture.

5. Chapter 4. Breeding with Plant Biotechnology

   Kamrun Nahar

   Abstract

   The chapter, “Breeding with Plant Biotechnology,” discusses Jatropha breeding and the growing field of biofuel production employing plant biotechnology. Biofuels are a sustainable alternative to fossil fuels as renewable energy demand rises. Jatropha's drought resilience and capacity to flourish on damaged soils make it a promising biofuel crop. The chapter discusses plant biotechnology methods, notably in vitro tissue culture, to grow disease-free, high-quality Jatropha plants. These strategies include direct and indirect organogenesis, somatic embryogenesis, and growth regulators. Creating genetically identical plants optimized for biofuel generation is the goal. Benzyl adenine (BA) and Indole-3-butyric acid (IBA) growth hormones help leaf, petiole, and shoot explants induce callus and regenerate shoots. In vitro, micropropagation is used to mass produce Jatropha to address biofuel demand. Glycerin and seed cake are valuable byproducts of this method, which produces biodiesel from Jatropha seed oil. It describes the tissue culture-based regeneration of Jatropha plants and their potential as renewable energy sources. As industrialization and commercialization are advancing, the undeniable use of energy to power up the machineries needs clean energy without creating any pollution to keep our environment clean. Consequently, utilizing green fuel is a practical and suitable option to recognize the competent and preferable feedstocks for biofuel production and to achieve its market value (Sunny in Organ Environ 34:619–633, 2021). Therefore, conventional feedstock cultivation alone will not be sufficient to meet the global need for producing bio-based energy from energy crops to produce fuel (Al Khayri et al in Plants 11(10):1292, 2022). In recent years, due to the increasing demand for biofuel, breeding programs for energy crops have been established in distinct countries, for instance, Brazil, India, Senegal, and Bangladesh (Divakara et al in Biol Genet Improv Jatropha curcas L Rev Appl Energy 87(3):732–742, 2010; Nahar and Borna in Asian J Biotechnol Bioresour Technol 2(3):1–8, 2010). This chapter will focus on Jatropha breeding technology for producing bioenergy through biotechnology. Raw Jatropha’s major market is beginning to open in the energy field, with the growth of Biodiesel and commercially used important byproducts. We can overcome this challenge by using elite varieties, developed with plant biotechnological methods to produce biodiesel through in vitro-generated plants of Jatropha, which will be an excellent substitute for pollution-free emissions. Plant tissue culture, also referred to as in vitro culture, is introduced as one of the most promising and environment-friendly methods for the sustainable supply of biofuels. The second-generation energy crop can live for many years and can produce huge amounts of seeds every year, from which biofuel can be easily produced, (Nahar in Cultivation of Jatropha curcas L. in Bangladesh: a sustainable solution to the energy, environmental and socioeconomic crisis. VDM Publisher, 2011; Nahar and Sunny in J Energy Nat Resour 3(4):51–57, 2014; Nahar and Sunny in Curr Environ Eng 3(1):18–31, 2016) and the propagation of the feedstock is an important bottleneck to this potential. Such volumes will assist in meeting the increasing demand for fuel. As noted in earlier chapters, the mentioned important non-food, perennial bioenergy crops, have been known as potential feedstock for the production of biofuel, producing seeds containing inedible oil, and to what extent it can supply fuel and meet the national energy demands can be estimated. Not only, does the plant not need arable lands and does not compete with food, but these energy crops can also be grown on degraded soils having low fertility and moisture, so they are drought-resistant crops and help in climate change adaptation as well as in mitigation by the production of environment-friendly fuel. In this context, in vitro regeneration of J. curcas plantlets through plant biotechnology as tissue culture techniques have been performed for mass clonal propagation mainly through organogenesis (Rajore and Batra, J Plant Biochem Biotechnol 14:73–75, 2005; Jha et al in Plant Biotechnol Rep 1(3):135–140, 2007; Kalimuthu et al in Plant Tissue Cult Biotechnol 17:137–147, 2007; Kumar and Reddy in Ind Crops Prod 39:62–68, 2012; Kumari et al Biol Plantarum 52:17–25, 2008; Nahar and Borna, ARPN J Sci Technol 3:38–42, 2013, Asian J Biotechnol Bioresour Technol 2(3):1–8, 2018) and partially it can be done from embryogenesis procedures. As an environment-friendly energy crop, the development of breeding and germplasm evaluation with improved and disease-resistant jatropha varieties including the delivery is a very important aspect to consider for commercial cultivation, and the use of biodiesel feedstock is being considered as a suitable alternative for limited fossil fuel reserves. By applying plant biotechnology, we can produce plants for commercial cultivation. Therefore, to produce an optimized protocol in vitro propagation of Jatropha curcas, plant regeneration by tissue culture technique would be a feasible alternative method for improving the quality and production of high-quality Jatropha plants that are free of any disease and pest, ensuring the maximum production potential of varieties that are genetically identical to the parent plant as well as to one another (Raven et al in Biology of plants, W.H Freeman and Company, New York, 1999). However, the explants are of utmost importance to selecting for the performance of the plant in vitro culture. There are several factors related to the explants, such as genotype, the origin of tissues, size of the plant including the shape of the mother tissues, which are responsible for the failure or success of in vitro morphogenesis (Ibáñez et al in Plants 9:897, 2020; Van Peer in Growing Jatropha: including propagation methods for Jatropha Curcas and production and use of Jatropha products, 2010). Besides the appropriate use of plant growth, a regulator in in vitro culture has the potential to make it more efficient (Sharma et al in Forests 14:1212, 2023). The present chapter shows a process to acquire biofuel from in vitro regeneration, which was achieved from different explants of the important bioenergy crop, Jatropha curcas.

6. Chapter 5. Sustainability Under Abiotic Stresses and Degraded Medium

   Kamrun Nahar

   Abstract

   This chapter reveals Jatropha's remarkable resilience as a harsh-condition biofuel plant. Rock, gravel, sandy, saline, dryland, flooded, and marginal soils with high salinity, low fertility, and limited water supply support jatropha. It grows well on marginal ground, making it a suitable commercial crop. Jatropha survives prolonged drought and low humidity. Under stress, osmotic adjustment preserves water intake and cell turgor, improving resilience. Biofuel production has grown in industrialized and emerging countries due to its rapid growth and adaptability to different agro-climatic conditions, making it a viable fossil fuel alternative. Plants may withstand 7–14 days of flooding on damp soils. Saline and saline-sodic soils support jatropha. Plants prevent ion toxicity and maintain water intake during drought by osmotic adjustment. In conclusion, Jatropha's biofuel potential and ability to grow on dry, saline, wet, and degraded soils make it a viable marginal crop. It can meet worldwide energy and environmental needs because of its abiotic stress resilience. Jatropha is a sustainable biomass feedstock to produce biofuel as the plant can grow under abiotic stresses including different types of soil (Nahar in Cultivation of Jatropha curcas L. in Bangladesh: a sustainable solution to the energy, environmental and socioeconomic crisis. VDM Publisher, 2011). It also thrives on any growing medium including stony, gravelly, sandy as well as under saline conditions (Dagar in Land Degrad Dev 17(3):285–299, 2006). In addition, the plant can be grown in dryland areas as well as in flooded lands, shallow fields, and rocky terrains including marginal, degraded, abandoned, and boundary lands. Marginal lands are generally characterized by high soil salinity, low fertility, and limited supply of water. Jatropha is such a plant that could be cultivated for commercial production in marginal land as the plant can survive and grow well under stressful environments. Thus, the plant is characterized by its high drought, flood, and salinity tolerance, rapid growth, and adaptability to different agroclimatic conditions (Silva et al. in Environ Exp Bot 69(3):279–285, 2010; Divakara et al. in Rev Appl Energy 87(3):732–742, 2010).

7. Chapter 6. Biofuel Crop to Combat with Climate Change

   Kamrun Nahar

   Abstract

   This chapter highlights Jatropha biofuel crop climate change mitigation. The chapter starts with climate change and fossil fuels’ influence on global warming and lousy weather. This option enables biofuels to be studied as a greener, more sustainable energy source. Jatropha is a viable biofuel crop due to its oil output. Poor nations may create an eco-friendly energy source on non-arable land. Farmers and smallholders may exploit the plant's propensity to thrive in arid and semiarid conditions, including damaged and abandoned areas, to replace fossil fuels. Climate change causes droughts and rising seas in Bangladesh. Ideal for drought and salt, jatropha flourishes. Osmotic adjustment helps it thrive in water/salt-stressed soils, which may help climate-affected populations. Energy crops are investigated for climate change mitigation. Carbon sequestration from jatropha farming and renewable energy reduce climate change. Jatropha biodiesel may cut aviation and transportation greenhouse gas emissions. Agricultural resilience, carbon sequestration, and energy potential are highlighted. The chapter suggests Jatropha-based renewable energy to tackle the global energy and environmental crises.

8. Chapter 7. Land Use Patterns and Potential Cultivation Areas

   Kamrun Nahar

   Abstract

   Bangladeshi land use, agricultural prospects, and biofuel production are covered in this chapter. Due to population growth and limited land resources, the chapter emphasizes sustainable land use. Floods, droughts, and food shortages reduce land availability, necessitating biofuels. Jatropha, a significant biofuel crop in Bangladesh, grows on non-arable soil without affecting food production. Jatropha's co-benefits makes it an essential local and worldwide environmental and economic resource. Energy crop agriculture in Bangladesh requires land use modification due to urbanization. Biofuel production against land-use limits and energy demand is discussed. Bangladeshi biofuel crop production potential by area and land allotment per capita are provided. Sustainable and equitable biomass production for energy and material outputs and the environment is highlighted. Biofuel crop, land use in Bangladesh is described in this chapter. It encourages sustainable land management and biofuels like Jatropha to boost the global energy supply and alleviate environmental and economic issues. Our lives are inextricably related to the climate and the use of energy, which has links to our food supply; these two factors also have ramifications for how the available land is utilized. Some of the most fundamental needs for human survival are food, energy, and water. They are all sustained on the ground, a finite resource that does not replenish itself. The population of the globe is expanding at a fast pace and will continue to do so; hence, the production of food and other types of energy will rely on the availability of this finite resource in the future to ensure sustainability. The use of fossil fuels, most notably coal and oil, is responsible for changes in atmospheric temperatures that are significant enough to contribute to increasingly more damaging floods, salinity, droughts, and other phenomena that influence the amount of available land. It is possible to reduce these trends by increasing energy efficiency, developing and using clean, sustainable energy sources, and increasing energy efficiency even more. This will ensure that harmful emissions will not continue to damage the environment and will not continue to worsen the problem of a lack of land. Because biofuels are derived from biomass, they have the potential to become substantial contributors to the world's primary energy supply over the next century. Furthermore, their use is expected to rapidly increase in developed and developing countries, affecting land management. There are a few energy crops that can be grown in Bangladesh that have a long lifespan and have the potential to generate a significant quantity of seeds each year. These seeds can be used to manufacture biofuel readily. Because of this, we will be better able to fulfill the ever-increasing demand for gasoline throughout the nation. In terms of energy, jatropha has the ability to meet Bangladesh's demands since it does not need arable land and does not interfere with food production. This fuel that is created from the oil-bearing plant might be used in a variety of applications, including illuminating lights, operating irrigation pumps, and other agricultural machinery, powering household generators, powering vehicles, and, most crucially, functioning as jet fuel, which would have many positive effects on the environment and the economy. Additionally, the fuel might be exported overseas. Biofuels, energy sources derived from biomass, have the potential to emerge as substantial contributors to the world's primary energy supply during the next century and to see considerable growth in both developed and developing countries. They may be derived from any biological source, although plants are the most frequent starting point for their production. The manufacture of biofuel makes use of a wide variety of plants and components generated from plants. On a global scale, the most prevalent biofuel applications are to power automobiles, heat houses, and other buildings, operate generators and stovetops for cooking, etc. Over the last several years, the sectors have seen rapid expansion, particularly in the United States, Europe, and now Asia. This chapter highlights Bangladesh's land use patterns and feasible cultivation areas based on a study into the cultivation technique, ecological and agronomic issues, crop production, and harvesting. The research was based on findings from Bangladesh. In addition to this, it discusses the applications of the plant as well as its socioeconomic advantages and production costs. It concisely outlines the process for manufacturing biofuels and other beneficial byproducts. In addition to this, the capacity of biodiesel made from Jatropha curcas to remove carbon dioxide from the atmosphere while simultaneously competing favorably with traditional fossil fuels is analyzed and explored. We can aid in reestablishing the natural equilibrium of CO₂ levels in the atmosphere if we power our vehicles with biofuels. The feedstock used to generate fuels needs carbon dioxide (CO₂) to grow, and they get it from the atmosphere. This helps biofuels displace the usage of fossil fuels.

9. Chapter 8. Environmental, Medicinal and Socioeconomic Benefits

   Kamrun Nahar

   Abstract

   This chapter discusses Jatropha's environmental, medicinal, and social benefits. The environment and energy needs may improve with this perennial biomass source. Second-generation biofuel jatropha grows well in various soils and is a sustainable fossil fuel alternative. As a phytoremediator, it lowers soil salinity and stores plenty of CO₂. Traditional medicine employs the plant's bark, leaves, and roots for anti-inflammatory, antibacterial, and therapeutic benefits. Jatropha promotes rural development and women's empowerment. Biodiesel, crude oil, and lighting fuel may be made from renewable energy feedstock. The chapter discusses Jatropha cultivation's socioeconomic potential for rural development and women's empowerment in underdeveloped nations and thus to reduce poverty. Agriculture and industry utilize seed cake and glycerin. The plant Jatropha curcas has medicinal and agricultural benefits. Its adaptability and ability to tolerate challenging environments make it an essential crop for Bangladesh's sustainable growth. The chapter stresses studying multifunctional energy crop to address global energy, health, and socioeconomic development challenges.

10. Chapter 9. Low-Cost Biofuel Production, Byproducts and Technical Analysis

    Kamrun Nahar

    Abstract

    This chapter covers low-cost Jatropha curcas biofuel production, byproducts, and technical analysis. The chapter stresses Jatropha's sustainability and accessibility as a biofuel source. The easy and cost-effective method of planting, oil extraction, and transesterifying Jatropha seeds oil to biodiesel is described. Biotechnological approaches like tissue culture for plantlet generation show that Jatropha farming is simple and needs little money. Fuel emissions are lower due to its low sulphur content. The chapter also discusses using Jatropha oil for rural lighting, cooking, and diesel replacement in automobiles and agricultural machines. Oil extraction leftover seed cake residue may be used as an organic soil supplement or biogas fuel. This chapter shows Jatropha as a sustainable, cost-effective biofuel with many uses and advantages. It emphasizes the plant's sustainable energy generation and industrial and agricultural services for its byproducts.

11. Chapter 10. Current Status and Future Prospects

    Kamrun Nahar

    Abstract

    This chapter, “Current Status and Future Prospects,” examines biofuels, including Jatropha curcas biodiesel. Jatropha's high oil content, stress resilience, and soil adaptability make it a desirable second-generation bioenergy feedstock. South Asian countries may use 5% inedible oil-based biodiesel by 2030, with Jatropha as a leading choice. The chapter discusses how Jatropha cultivation fights climate change, stabilizes soil, decreases desertification, and employs impoverished nations. Jatropha's energy potential is crucial as biofuel development is prioritized globally. Osmotic adjustment sustains cellular turgor under stress, helping Jatropha thrive on damaged land and abiotic stressors. The chapter explores using Jatropha for environmental restoration and boundary crops in high-salinity coastal areas. Jatropha's byproducts—fertilizers, bio candle wax, briquettes, and bioplastics—show its flexibility. In the chapter, Jatropha manufacturing as a diesel substitute is predicted to thrive. The chapter concludes that Jatropha production, processing, and use need further research to ensure sustainable and beneficial energy sector use.

12. 11. Correction to: Jatropha curcas L: A Potential 2G Energy Crop to Produce Biofuel in Bangladesh

    Kamrun Nahar