Edible Oil Production Research Articles

Seed development in Paeonia ostii (Paeoniaceae), with particular reference to embryogeny

BackgroundSeeds of Paeonia ostii have been proposed as a source of raw material for the production of edible oil; however, lack of information about the developmental biology of the seeds hampers our ability to use them. Our aim was to investigate development of the seed coat, endosperm and embryo of P. ostii in relation to timing of accumulation of nutrient reserves from pollination to seed maturity. Ovules and developing seeds of P. ostii were collected at various stages of development from zygote to maturity. Seed fresh mass, dry mass, germination, moisture, soluble sugars, starch, protein and oil content were determined. Ontogeny of seeds including embryo, endosperm and seed coat were analyzed histologically.ResultsThe ovule of P. ostii is anatropous, crassinucellate and bitegmic. The zygote begins to divide at about 5 days after pollination (DAP), and the division is not accompanied by cell wall formation. By 25 DAP, the proembryo begins to cellularize. Thereafter, several embryo primordia appear at the surface of the cellularized proembryo, but only one matures. Endosperm development follows the typical nuclear type. The seed coat is derived from the outer integument. During seed development, soluble sugars, starch and crude fat content increased and then decreased, with maximum contents at 60, 80 and 100 DAP, respectively. Protein content was relatively low compared with soluble sugars and crude fat, but it increased throughout seed development.ConclusionsDuring seed development in P. ostii, the seed coat acts as a temporary storage tissue. Embryo development of P. ostii can be divided into two stages: a coenocytic proembryo from zygote (n + n) that degenerates and a somatic embryo from peripheral cells of the proembryo (2n → 2n). This pattern of embryogeny differs from that of all other angiosperms, but it is similar to that of gymnosperms.

Agricultural by-product extracts as scale inhibitors of mild steel in tap water

Three industry by-products, namely rapeseed pomace from the wastes of edible oil production, sugar beet pulp from the wastes of sugar production and fodder radish cake, have been tested as scale inhibitors of mild steel in tap water. Ethanol extracts were prepared by maceration and the electrochemical approach to study the scale formation was utilized, based on the measurement of oxygen reduction current during nucleation and formation of calcium carbonate in the presence of extracts. Scaling time, porosity and area density of the scale was determined and used to characterize the inhibition efficiency. Chemical compositions of extracts were analysed by GC–MS analysis (gas chromatography with mass selective detector by mass selective integration). The rapeseed pomace extract and fodder radish cake extract at the concentration of 10 mL/L appeared to be efficient scaling inhibitors. Sugar beet pulp extract increases the crystallization time, however the amount of deposited scale appeared to be the same as in the tap water. The scale inhibition is caused mainly by the formation of adsorbed film on the scale nucleus that blocks the surface and prevent further crystal growth.

Antibiogram Screening of Edible oils Sold in two Geopolitical Zones of Nigeria

Edible oil is of the most important and widely used processed foods. The study was carried out to assess the microbiological quality of edible oil (Shea butter, Coconut oil and Palm Kernel oil) from two geopolitical zones of the country. A total of thirty (30) samples were gotten from four (4) different markets in the two geopolitical zones. Bacteria and Fungi were isolated and identified base on cultural, microscopic, biochemical characteristics and antibiotic sensitivity test were carried out. The total heterotrophic bacteria count (THBC) of the sample ranged from 3.1 x 103 – 3.6 x 104cfu/ml. The total heterotrophic fungi count ranged from 1.0 x 102 – 6.4 x 103cfu/ml. The bacteria isolated and identified were Bacillus sp., Escherichia sp., Pseudomonas sp., Micrococcus sp., Staphyloccus sp., Enterobacterium sp., and Klebsiella sp while the fungi were Aspergillus niger, Aspergillus fumigatus, Rhizopus, Fusarium, Candida sp and Penicillium sp. The antibiogram of the Gram positive bacteria showed that all the organisms were sensitive to Erythromycin (100%) while Gram negative organisms were sensitive to Ofloxacin (100%) and Ciprofloxacin (100%). The bacterial load of all the samples fell within the minimum acceptable range according to CODEX standard. It is important that improve aseptic techniques be employed in the production, handling and marketing of edible oil.

Comparative Advantage of Edible Oil Production in South Asia: An Assessment Using the Policy Analysis Matrix

There is growing interest and efforts by the governments of South Asian countries to improve the competitiveness of domestic edible oil production with the objective of substituting for imports. This study evaluates and compares the comparative advantage and social profitability of the production of edible oils in Bangladesh, India, Pakistan, and Sri Lanka using the Policy Analysis Matrix (PAM) approach. The data required for this analysis were obtained from the Input-Output (I-O) table of the Global Trade Analysis Project (GTAP) Database (Version 10). Edible oils include animal fats, vegetable oils, margarine, and oil cake. Plant and animal sources, extraction, wearing, and electronic manufactures were treated as tradable inputs, while labor and capital were treated as non-tradable inputs. Results revealed that edible oils output is highly protected in Bangladesh while the inputs are highly protected in Pakistan. Production of edible oils, is a socially profitable activity in India, Pakistan, and Sri Lanka and they have a comparative advantage which is attributed to the low cost of non -tradable inputs. Conversely, edible oil production is not socially profitable in Bangladesh and the social cost of non-tradable inputs is higher than those of other inputs. It shows that Bangladesh does not have a comparative advantage in edible oil production. Inputs extracted from plant sources are highly taxed in Pakistan, and hence its comparative advantage is not revealed in export statistics. It is recommended that distortions in edible oil industry be removed to realize its comparative advantage.

Wastewater from the Edible Oil Industry as a Potential Source of Lipase- and Surfactant-Producing Actinobacteria.

Wastewaters generated from various stages of edible oil production in a canola processing facility were collected with the aim of determining the presence of lipase-producing actinobacteria of potential industrial significance. The high chemical oxygen demand (COD) readings (up to 86,700 mg L−1 in some samples) indicated that the wastewater exhibited the nutritional potential to support bacterial growth. A novel approach was developed for the isolation of metagenomic DNA from the oil-rich wastewater samples. Microbiota analysis of the buffer tank and refinery condensate tank wastewater samples showed a dominance of Cutibacterium acnes subsp. defendens, followed by a limited number of other actinobacterial genera, indicating the presence of a highly specialized actinobacterial population. Cultured isolates with typical actinobacterial morphology were analyzed for their ability to produce lipases and biosurfactants. Two strains, designated as BT3 and BT4, exhibited the highest lipase production levels when grown in the presence of tributyrin and olive oil (1.39 U mg−1 crude protein and 0.8 U mg−1 crude protein, respectively) and were subsequently definitively identified by genome sequencing to be related to Streptomyces albidoflavus. Cultivation of the strains in media containing different types of oils did not markedly increase the level of enzyme production, with the exception of strain BT4 (1.0 U mg−1 crude protein in the presence of peanut oil). Genome sequencing of the two strains, BT3 and BT4, revealed the presence of a range of lipase and esterase genes that may be involved in the production of the enzymes detected in this study. The presence of gene clusters involved in the production of biosurfactants were also detected, notably moreso in strain BT3 than BT4.

DESENVOLVIMENTO DO GIRASSOL SOB DOSES DE BIOFERTILIZANTE BOVINO EM CULTIVO AGROECOLÓGICO

Sunflower production in the Northeast is still incipient. It would be an important challenge for Piaui to produce sunflower, in quantity and quality, as it would certainly add to the State's agricultural GDP, especially with regard to the production of edible oil, extracted from achenes. The effects of a liquid bovine biofertilizer on sunflower growth and biomass under agroecological cultivation were analyzed. The experiment was carried out in DIC, with five treatments and six repetitions, totaling 30 experimental units. The four treatments with the biofertilizer were 50, 75, 100 and 125% of the optimal recommendation, and the control (without application). It was analyzed: plant height (AP), stem diameter (DC), chapter diameter (DCAP), shoot dry matter production (MSPA) and root system (MSSR). The results were subjected to analysis of variance and later regressions were performed. Despite the non-significant results, the sunflower plants that received the biofertilizer showed better performance when compared to plants that did not receive the liquid organic input; furthermore, in the variables AP and MSSR, the best results were found in plants that received the highest concentrations of biofertilizer. As for the other variables, the maximum points (concentration of biofertilizer) were between 79 and 167%, with a suggestion of toxic effect in more concentrated doses of the organic input.

Reviving horizontal area expansion of sunflower (Helianthus annuus L.) in rice fallow ecosystems - a relook

Rice is cultivated during kharif season in Southeast Asia, but a large chunk remains uncultivated or left fallow in the subsequent season due to several reasons, the major being the water scarcity. Sunflower is cultivated in these rice fallowsin the states of Karnataka, Andhra Pradesh, Telangana, Odisha, and West Bengal and to a limited extent in other states. This is an opportunity for horizontal expansion ofsunflower area to increase the edible oil production in the country. The initial spurt in area since 1970-71 has experienced a sharp decline in spite of sunflower being one ofthe most preferred edible oils in the rural, urban and peri-urban households. Unlike the popular utera method for pulses, sunflower cultivation needs special attention. Concerted and focused research efforts are needed for fine-tuning the production technology of sunflower under rice fallow. The recent success stories of co-culturing honey bee with sunflower as a community initiative in Nizamabad district of Telangana state need to be extended to other sunflower growing regions of the country. This review critically appraises the rice fallow environments in general, determinants of sunflower production in this fragile eco-system and efforts needed for successful area-cum-production growth of sunflower crop in the country.

Comprehensive metabolite profile of multi-bioactive extract from tree peony (Paeonia ostii and Paeonia rockii) fruits based on MS/MS molecular networking

Tree peony seed, traditionally used for edible oil production, is rich in α-linolenic acid. However, little attention is given to the fruit by-products during seed oil production. The present work aimed to comprehensively investigate the phytochemical constituents and multiple biological activities of different parts of tree peony fruits harvested from Paeonia ostii and Paeonia rockii. 130 metabolites were rapidly identified through UPLC-Triple-TOF-MS on the basis of MS/MS molecular networking. Metabolite quantification was performed through the targeted approach of HPLC-ESI-QQQ-MS. Eight chemical markers were screened via principal component analysis (PCA) for distinguishing species and tissues. Interestingly, two dominant compounds, paeoniflorin and trans-resveratrol, are specially localized in seed kernel and seed coat, respectively. Unexpectedly, the extracts of fruit pod and seed coat showed significantly stronger antioxidant, antibacterial, and anti-neuroinflammatory activities than seed kernel from both P. ostii and P. rockii. Our work demonstrated that tree peony fruit is promising natural source of bioactive components and provided its potential utilization in food and pharmaceutical industries.

Model sensitivity of simulated yield of winter oilseed rape to climate change scenarios in Europe

Winter oilseed rape (WOSR) is Europe’s prime oilseed crop and is grown for biofuel and edible oil production. To investigate the effects of climate change on the yield of winter oilseed rape, two crop models (HERMES and HUME-OSR) were used. This study investigated the sensitivity of crop model parameters (as a proxy of plant traits) under climate change. For both models, a global sensitivity analysis was performed under current temperatures, an increase of 2 and 4 °C, in combination with −50 %, −25 %, current, +25 % and +50 % precipitation change, resulting in 15 combinations. The analysis was done for six different sites in Europe located in Germany, France, and the Czech Republic. The two models differ in model formalism; however, results show that the most sensitive parameters of WOSR for both models are associated with drought, both under current climatic conditions, and under changing temperatures and precipitation regimes. The sensitivity analysis shows that the most sensitive parameters for WOSR yield under climate change relate to plant traits affecting the growth of the vegetative phase.

Monitoring of aflatoxins in edible vegetable oils consumed in Western Iran in Iran: a risk assessment study

ABSTRACT Edible vegetable oils as an important component of our daily diet are widely consumed around the world. In this research, the concentrations of aflatoxins, including B1 (AFB1), B2 (AFB2), G1 (AFG1) and G2 (AFG2) were measured in 43 edible vegetable oil samples such as peanut oil (n = 18), sesame oil (n = 15), olive oil and (n = 10) using high-Performance liquid chromatography with fluorescence detector (HPLC- FLD). In addition, health risks of aflatoxins in adults and children due to ingestion of edible oils were calculated using the Margin of Exposure Estimation (MOE) by the Monte Carlo simulation (MCS) model. The results indicated that the total aflatoxin (TAF) and AFB1 concentrations in 30 (69.76%) and 29(67.14%) of the samples were in the ranges 0.09–30.95 µg/kg and 0.04–20.56 µg/kg, respectively. Also, the concentrations ofTAF and AFB1 in 18 and 16 samples were higher than the European Union maximum permissible limit, which were 4 and 2 µg/kg, respectively.While according to risk assessment analysis, the consumption of edible vegetable oils in children was safe. MOE values of aflatoxin through the consumption of edible vegetable oils in adult were lower than 10,000, showing that the adult are at considerable liver cancer risk. Therefore, it is necessary to strict inspection and monitoring of edible oil products by the regulatory bodies.

Effect of oven and sun drying on the chemical properties, lipid profile of soursop (Annona muricata) seed oil, and the functional properties of the defatted flour.

Soursop seeds present a potential source of edible oil production. This work was aimed at determining the effect of oven and sun drying on the chemical properties and lipid profile of soursop seed oil as well as the functional properties of the defatted seed flour. The chemical properties, lipid profiles, and functional properties of soursop seeds dried for 0, 6, 12, 18, 24, and 30 hr, and 0, 1, 3, and 5 days, respectively, in the oven and on the sun using time T0 as the control sample were determined using oil quality indices, gas phase chromatography, and functionality tests for flours, respectively, with a view of highlighting the potentials of the defatted seed. The result of the study revealed that the chemical properties of oils for oven‐dried and sun‐dried seeds changed with drying technique and time, with iodine value being the more affected parameter, and peroxide value (PV) being the least. The control exhibited the highest free fatty acids (FFAs), peroxide value (PV), thiobarbituric acid (TBA) value, and saponification value compared with dried samples. The fatty acid profiling showed that the predominant fatty acids were C18:1n‐9, C18:2n‐6, and C16:0 and that unsaturated fatty acids (UFA), monounsaturated fatty acids (MUFA), polyunsaturated fatty acids (PUFA), and omega‐fats were not significantly affected by the oven drying time. The mean PUFA content ranged from 31.72% with sundried seeds to 30.92% after 30 hr of oven‐drying and was not significantly affected by the drying technique. The oils contained more n‐6 (30.60%) fatty acids than n‐3 (1.12%). The PUFA/SFA ratios [1.14–1.37] as well as the Atherogenic index (AI) [0.25–0.27] were acceptable because of the recommended range of FAO/WHO. PUFA/SFA, n‐6/n‐3, and Atherogenic index (AI) did not change much with the sun‐drying technique compared with oven‐drying. Flours from sun‐dried seeds had better functional properties than oven‐dried and more than 3 different types of proteins (based on isoelectric points of proteins). It can be concluded that soursop seed contains good quality oil, which can be exploited to improve nutrition. Manufacturers of animal feeds should explore the agro‐industrial use of its oil and defatted seed flour.

Plot-Based Classification of Macronutrient Levels in Oil Palm Trees with Landsat-8 Images and Machine Learning

Oil palm crops are essential for ensuring sustainable edible oil production, in which production is highly dependent on fertilizer applications. Using Landsat-8 imageries, the feasibility of macronutrient level classification with Machine Learning (ML) was studied. Variable rates of compost and inorganic fertilizer were applied to experimental plots and the following nutrients were studied: nitrogen (N), phosphorus (P), potassium (K), magnesium (Mg) and calcium (Ca). By applying image filters, separability metrics, vegetation indices (VI) and feature selection, spectral features for each plot were acquired and used with ML models to classify macronutrient levels of palm stands from chemical foliar analysis of their 17th frond. The models were calibrated and validated with 30 repetitions, with the best mean overall accuracy reported for N and K at 79.7 ± 4.3% and 76.6 ± 4.1% respectively, while accuracies for P, Mg and Ca could not be accurately classified due to the limitations of the dataset used. The study highlighted the effectiveness of separability metrics in quantifying class separability, the importance of indices for N and K level classification, and the effects of filter and feature selection on model performance, as well as concluding RF or SVM models for excessive N and K level detection. Future improvements should focus on further model validation and the use of higher-resolution imaging.

Sunflower seed byproduct and its fractions for food application: An attempt to improve the sustainability of the oil process.

The sunflower (Helianthus annus L.) is one of the main oil crops in the world grown for the production of edible and biodiesel oil. Byproducts of the extraction of sunflower oil constitute a raw material with potential for several applications in the food area due to its chemical composition, including the high content of proteins and phenolic compounds. Thoughtful of a consumer increasingly concerned with the environmental impact, we try to clarify in this review the potential of using sunflower seed byproducts and their fractions to enhance the production of potentially functional foods. The applications of sunflower seed byproduct include its transformation into flours/ingredients that are capable of improving the nutritional and functional value of foods. In addition, the protein isolates obtained from sunflower seed byproduct have good technological properties and improve the nutritional value of food products. These protein isolates can be used to obtain protein hydrolysates with technological and bioactive properties and as matrices for the development of edible, biodegradable, and active films for food. The sunflower seed byproduct is also a source of phenolic compounds with bioactive properties, mainly chlorogenic acid, which can be extracted by different methods and applied in the development of functional foods and active and bioactive food packaging. The use of sunflower seed byproduct and its fractions are promising ingredients for the development of healthier and less expensive foods as well as the alternative to decrease the environmental problems caused by the sunflower oil industry.

Environmental sustainability challenges of China's edible vegetable oil industry: From farm to factory

With the increasing consumer demand and only 31% of the self-sufficiency rate, how to mitigate the supply safety of edible vegetable oil in an environmentally sustainable manner is a tremendous challenge for China. This study comprehensively qualified the potential environmental impact from the major edible vegetable oil production (i.e., soybean oil, rapeseed oil, and peanut oil) in China through the life cycle assessment method. Results show that rapeseed oil and peanut oil are environmentally friendly. More than 20% of environmental contamination could be avoided in 2025 by replacing the further increase in soybean oil production with a mix of the other products. The key contribution analysis indicates that the agricultural phase is a significant source of environmental pollution due to excessive fertilizer production and irrigation water consumption. During the oil processing phases of soybean oil and peanut oil, steam production also contributed to considerable environmental impact. Therefore, applying new fertilizers, developing water-saving irrigation technologies, and optimizing the steam heat exchange net are suggested. Moreover, increasing the oil extraction rate through electrotechnical technology has great potential in reducing the environmental damage caused by oil-bearing crop planting. Based on the spatial discrepancy in the agricultural phase, advantageous planting regions (e.g., Anhui, Henan, Shandong, and Jiangsu) are references for the further planting structure adjustment. Meanwhile, advocating scientific diets and optimizing the industry layout are recommended to ensure the healthy and sustainable development of China's edible vegetable oil industry.

Individual and interactive influences of elevated air temperature and soil drought at the flowering and boll-forming stage on cottonseed yield and nutritional quality

As the main byproduct of cotton production, cottonseed yields edible vegetable oil, ruminant feed, and industrial products. We evaluated the individual and interactive effects of elevated air temperature and soil drought on cottonseed yield and nutritional quality using two cotton cultivars, Sumian 15 (heat-susceptible) and PHY370WR (heat-tolerant). The experiment was conducted under three levels of soil relative water content (SRWC): (75 ± 5)%, (60 ± 5)% and (45 ± 5)% and two temperature regimes: ambient temperature (AT, 31.0/26.4 °C, mean daytime/night temperature) and elevated temperature (ET, 33.4/28.9 °C). Cottonseed yield, boll number, seed number, and single-seed weight were lower under combined ET and SRWC(45 ± 5)% than either individual stress or combined stresses in comparison with the control treatment (SRWC(75 ± 5)% under AT). Drought tended to increase oil content and reduce protein content, whereas ET showed almost the opposite effects. Under the combination of ET and soil drought, oil content was still higher than under control, although ET weakened the beneficial effects of drought. For protein, ET offset the negative impacts of mild drought on protein content, but protein content was not increased under SRWC(45 ± 5)%. Each stress or combined stress reduced oil and protein yields under all treatments, owing to declines in cottonseed yields. The combined stress reduced unsaturated fatty acid (UFA)/saturated fatty acid (SFA) and essential amino acid (EAA)/non-essential amino acid (NAA). Compared with PHY370WR, the sensitivity of Sumian 15 to the combined factors was evidenced in the following ways: (1) seed yield, yield components, oil and protein yields were decreased more for Sumian 15 than PHY370WR compared with the control treatment; (2) the combined stresses caused lower oil content, UFA, and UFA/SFA in Sumian 15 than PHY370WR; (3) interaction effects of the combined factors on protein content and EAA/NAA were detected only in Sumian 15.

Purification and activation of the Iraqi bentonite for edible oil Production

Samples of Iraqi bentonitic sediments, representing local montmorillonite brought from Traifawi region near the Syrian border. Mineralogical the samples were characterized as low grade of Ca-smectite, particle size, chemical analysis, XRD, and BET surface area analyses of the samples were carried out to examine the structure of bentonite before and after acid activation. The goal is to prepare a bleaching earth for edible oil production. Iraqi Bentonite was beneficiated and activated by series of physical and chemical steps, using 4N & 6N concentration of hydrochloric acid and at a temperature of 70-80 ° C. Surface area and pore volume of the samples were determined to assess the bleaching power of the activated bentonite. The chemical composition of the bentonite improve after remove Calcite phase was disappeared, reduced Iron oxide percentage with Increasing the concentration of hydrochloric acid and the treatment time lead to the growth of Smectite phase and change the structural of bentonite which noticed by improve of surface area from 58.93 to 206.62 m2 g−1.

Fatty Acids and Flavor Components in the Oil Extracted from Golden Melon Seeds

AbstractFor complete utilization of raw materials and edible oil production, the oil from golden melon seeds (GSs) is extracted via the cold‐pressing, hot‐pressing, and ultrasound‐assisted aqueous enzymatic extraction (AEE), and the fatty acid composition, and nutritional value of the extracted GS oils (GSOs) are analyzed. The volatile compounds present in the GSOs are determined using gas chromatography–mass spectrometry. The aroma profiles of different GSO samples are further distinguished by using an electronic nose. A total of 16 fatty acids are identified in the GSO samples, with atherogenic, thrombogenic, and nutritive value indices ranging from 0.142–0.151, 0.366–0.403, and 5.019–5.299, respectively. Moreover, 43 volatile compounds, including esters, hydrocarbons, alcohols, ketones, pyrazines, and aldehydes are identified. The cold‐pressed GSO presents fresh and fruity flavors, while the hot‐pressed GSO presents roasted, nutty, fatty, and fruity flavors, and the GSO obtained via AEE presents fatty and fruity flavors. The acid and peroxide contents of these oil samples are 0.69–079 mg g−1 and 5.17–5.79 mmol kg−1, respectively. The results indicate that the extraction method affects the fatty acid composition, flavor components, and physiochemical properties of the GSO. This study may help promote the development of edible GSO.Practical applications: With high demand for edible oils, it is of great significance to find natural edible oils from different sources. The oil in golden melon seeds is extracted by different methods. Their fatty acid composition and flavor components are analyzed. The GSO extracted via AEE method is rich in fatty acids composition. This work would guide the development of an edible GSO and increase the value of golden melon.

Adsorptive removal of aflatoxin B1 from vegetable oils via novel adsorbents derived from a metal-organic framework

Vegetable oils are essential daily diet, but they are simply contaminated with aflatoxin B1 (AFB1), a serious toxic compound to human health. Adsorption method due to the easy operation, high efficiency and low costing is set to become a main detoxification technique for AFB1. Unfortunately, previous reported adsorbents were rarely used for detoxification in food industry since they cannot meet the criteria of large-scale production of edible oils. Metal-organic frameworks (MOFs) with unique textural properties could be favorable precursors for synthesis of advanced materials. In this research, three kinds of Cu-BTC MOF-derived porous materials were prepared by different carbonization temperature and characterized by XRD, SEM, FT-IR, and nitrogen adsorption-desorption techniques. Isotherm and kinetic studies on the adsorption behaviour of AFB1 onto the three porous carbonaceous materials have been systematically conducted. The results revealed that the porous carbonaceous materials could act as the excellent adsorbents that were of enough adsorption sites for AFB1, mainly due to the hierarchical porous structure and large surface areas for the enhancement of adsorption capacity. Notably, the porous carbonaceous materials could not only remove more than 90% of AFB1 from real vegetable oils within 30 min, but also remain the treated oils at low cytotoxicity. Meanwhile, the detoxification process could little affect the quality of oils. Thus, the Cu-BTC MOF-derived porous carbonaceous materials with high efficiency, safe, practical and economic characteristics could be novel potential adsorbents used in the application of AFB1 removal from contaminated vegetable oils.

A comprehensive review on processing, therapeutic benefits, challenges, and economic scenario of unconventional oils

The review aims to focus on the processing and economic challenges of these oil industries (lack of organized cultivation, collection, processing, research, and market linking) and fetch the attention toward the application of green technology. The present article provides a systematic view to open a new sphere of understanding for unconventional oilseeds with its geographical distribution, chemical composition, health benefits, and research. Further, new sources of unconventional oil (cottonseed, rice bran, sal seed, mango kernel, etc.) may impart an alternative source of edible oil, which can fulfill the country's edible oil deficit with economic contribution. In inference, the combined evidence supports the assertion that unconventional sources of oils may provide an alternatives to major seed oils. Practical applications Unconventional oils are the new boosting area to upthrust the production of edible oils and reduce the dependence of oil import from other countries. The emerging green technologies for oil extraction shall consider as high oil yield methods. There are many unconventional oil seeds which are still required to be the area for research and commercial application. The present article focused on the market scenario, health benefits of these oil seeds.

Welfare gains of inward-looking: An ex-ante assessment of general equilibrium impacts of protectionist tariffs on India's edible oil imports

Import substitution policies are often inward-looking in trade deliberations. The present study is an attempt to quantify the likely benefits of protectionist tariff hikes in enhancing domestic production and improving producer prices. It takes the case of the edible oil imports of India and estimates the price gains the oilseed producers (farmers) and the processing industries may receive; likely increase in domestic oilseeds and edible oil production, and the role the technology in attaining oilseeds/edible oil selfsufficiency. A three-sector open-economy Computable General Equilibrium (CGE) model is calibrated to a 2017–18 SAM developed for this purpose. Tariff hikes are assumed in different protectionist scenarios and their impacts on production and prices are simulated. Total Factor Productivity (TFP) estimates are derived for the oilseeds (2005–18) and the edible oil (2014–18) sectors to understand the technological penetration there. The price gains vary between 2.4% and 6% to the oilseeds producers and between 1.2% and 2.9% to the edible oil industries. The oilseeds production may enhance by 1.8% at maximum, and the edible oil production by 2.9%. The existing TFP growth is inadequate to move towards oilseeds/edible oil self-sufficiency. This demands a shift in production technology.