Sesame Varieties Research Articles

Morphological Characterization of Sesame (Sesamum indicum L.) Genotypes with DUS Descriptors

The current study's objective is to characterize eight sesame genotypes (Sesamum indicum L.) using the DUS descriptors. At Adhiparasakthi Agri College, Research Farm, Kalavai, the experiment was carried out in Randomized Complete Block Design with three replications in April 2023. Sesame varieties were assessed for 13 morphological features using DUS descriptors. Most of the analyzed traits showed a significant amount of variation. These differences in physical traits were useful for identifying particular sesame genotypes. The aforementioned study highlighted the distinctive qualities of sesame varieties and demonstrated that morphological variances exist in these genotypes due to variations in genetic makeup, suggesting that breeders may make greater use of these variations in the selection process based on their particular breeding programme. This is highly useful study for varietal identification and conservation.

Effect of Soil Types and Sowing Methods on Growth and Yield of Some Varieties of Sesame (<i>sesamum indicum L.</i>) Grown in Dutse, Jigawa State

A field trial on the effect of soil types and sowing methods on growth and yield of some varieties of sesame ( sesamum indicum L.) was conducted at school farm Federal University Dutse Jigawa state (latitude 11.00̊ N to 13.00̊ N and longitude 8.00̊ E to 10.15̊ E) during the 2019 rainy season. The treatments used were three soil types (Clay, loam, sand) and two sowing methods (drilling and dibbling). Two varieties of sesame namely EX-Sudan and E8 were used. A split-split plot design was used. Result showed that the number of leaves, number of capsules per plant 1000 seed weight and seed yield per plant were significantly affected by sowing method with drilling method producing the highest seed yield per plant and variety had significant effect on number of leaves per plant, days to 50% flowering and maturity and seed yield per plant with EX-Sudan manifesting the highest yield per plant. The interaction between varieties were only significant on number of capsules/plant while between sowing method and variety was only significant on seed yield per plant. Interaction between variety and soil type showed that V1S1 (EX-Sudan and Loamy soil) had the highest influence on plant growth parameters while V2S2 (E8 and Sandy soil) had the lowest. The results indicated that drilling is the best sowing method, loamy soil is the best soil type for growing sesame while the variety EX-Sudan produced the highest seed yield and seed quality of sesame more than the E8 variety. Thus, farmers could be recommended to adopt these agronomic practices using EX-Sudan for increased sesame production in the Sudan savanna ecological zone of Nigeria.

Determination of optimum planting time of different Sesame (Sesamum indicium L.) varieties for Chewaka district, Western Oromia, Ethiopia

Sowing date is the major problem in the production and productivity of sesame in western Oromia Ethiopia. The experiment was conducted to identify optimum sowing dates for sesame varieties to produce better seed yields. A field experiment consisting of the combination of three sesame varieties and three sowing times employed Randomized Complete Block in factorial arrangements with three replications. Analysis of variance indicated that plant height; branches number per plant and number of capsules per plant were significantly increased with sowing sesame at the onset of rainfall. All sesame varieties sown on the onset of rainfall gave the maximum seed yield in both years whereas three varieties had low yield at 10 days after the first and 20 days after the first. Among the three varieties, the Walin variety produced a maximum seed yield of 670 and 747 kg ha-1 on a farm in the first and second year respectively. The maximum yield (670 and 971 kg ha-1) was obtained from Walin and Obsa sesame varieties in the first and second years of the farm respectively. Therefore, the result indicated that sowing sesame varieties at the onset of rainfall is recommended for Chewaka areas and similar agroecology.

Sesame production constraints, variety traits preference in the Southeastern Tanzania: Implication for genetic improvement

Despite the prominence of sesame production in household and national economies, its productivity remains quite low (405.6 kg/ha) in comparison to the potential output of 1500 kg/ha. Low sesame production threatens the employment of 481,115 smallholder producers in Tanzania's sesame sub-sector. In view of that, to enhance sesame productivity, the present study lured to find out what restrictions upset sesame cultivation and spot farmers' desired traits for sesame cultivars in southeastern Tanzania. A semi-structured questionnaire and interview checklist were adopted to obtain data from 240 sesame cultivators. The findings revealed that the key impediments inhibiting sesame production in the studied regions included the prevalence of insect-pests (23.6%), diseases (15.7%), drought (10.1%), weed infestation (9.9%), insufficient capital (7.9%), high seed costs (7.6%), and a dearth of enhanced seeds (6.8%). Furthermore, according to sesame growers, the most important criteria in sesame variety selection were high yielding (45.7%), resistance to insect-pests and diseases (20.8%), early maturity (15.4%), appealing seed color (8.8%), and drought tolerance (6.3%). Meanwhile, it was reported that the market valued sesame cultivars with white grain colour, large grain size, clean seeds, and high oil content. Hence, the present study recommends enhanced breeding for improved sesame variety development with the desired traits by farmers and post-farm operators.

Five improved sesame reference genomes and genome resequencing unveil the contribution of structural variants to genetic diversity and yield-related traits variation.

Five improved sesame reference genomes and genome resequencing unveil the contribution of structural variants to genetic diversity and yield-related traits variation.

GROUNDNUT PRICE FORECASTING AND SUPPLY RESPONSE MARKET INTEGRATION IN INDIA

The oilseed industry plays a significant role in India's agricultural economy, and the nation is the world's biggest producer of oilseeds. These crops are second only to food grains in terms of total acreage, total output, and total economic worth. The nine oilseeds—including the seven edible varieties of groundnut, rapeseed-mustard, sunflower, soybean, and sesame—can be successfully cultivated in India. Outside of Rajasthan, groundnut expansion patterns generally declined. The output of groundnuts in the states of Andhra Pradesh and Karnataka has been declining recently. The state of Tamil Nadu had the fastest increase in groundnut production. Groundnut output fluctuations were found to be greater in Gujarat and Andhra Pradesh, as measured by the instability index. Gujarat, Tamil Nadu, and Karnataka all had relatively stable groundnut crop areas. The market had the largest monthly rise in wholesale groundnut prices compared to other markets.

Assessment of water absorption characteristics for improved sesame (Sesamum indicum L.) varieties during hydration

AbstractThe water absorption characteristics of sesame varieties (GT‐3, GT‐4, GJT‐5, GT‐6, and TKG‐22) were studied during hydration at temperatures ranging 35–55°C. The Peleg model adequately defined the hydration behavior of sesame seed varieties at the 35°C, 45°C, and 55°C soaking temperatures with the comparable coefficient of determination (R2) and mean relative percentage deviation modulus (P). The Peleg rate constant K1 and the capacity constant K2 reduced significantly with the rise in hydration temperatures, suggesting corresponding increases in the initial hydration rate as well as the equilibrium moisture content in all the varieties tested. The Arrhenius equation was used to calculate the activation energy (Ea) of GT‐3, GT‐4, GJT‐5, GT‐6, and TKG‐22 sesame varieties and was noted to be 38.74, 33.37, 30.68, 37.85, and 33.23 kJ/mol, respectively. The enthalpy (H) was raised significantly with hydration temperature while entropy (ΔS) and released energy (ΔG) were found nonsignificant (p > 0.05).

Lignan-Rich Sesame (Sesamum indicum L.) Cultivar Exhibits In Vitro Anti-Cholinesterase Activity, Anti-Neurotoxicity in Amyloid-β Induced SH-SY5Y Cells, and Produces an In Vivo Nootropic Effect in Scopolamine-Induced Memory Impaired Mice.

Alzheimer's disease, a major cause of dementia, is characterized by impaired cholinergic function, increased oxidative stress, and amyloid cascade induction. Sesame lignans have attracted considerable attention owing to their beneficial effects on brain health. This study investigated the neuroprotective potential of lignan-rich sesame cultivars. Among the 10 sesame varieties studied, Milyang 74 (M74) extracts exhibited the highest total lignan content (17.71 mg/g) and in vitro acetylcholinesterase (AChE) inhibitory activity (66.17%, 0.4 mg/mL). M74 extracts were the most effective in improving cell viability and inhibiting reactive oxygen species (ROS) and malondialdehyde (MDA) generation in amyloid-β25-35 fragment-treated SH-SY5Y cells. Thus, M74 was used to evaluate the nootropic effects of sesame extracts and oil on scopolamine (2 mg/kg)-induced memory impairment in mice compared to the control cultivar (Goenback). Pretreatment with the M74 extract (250 and 500 mg/kg) and oil (1 and 2 mL/kg) effectively improved memory disorder in mice (demonstrated by the passive avoidance test), inhibited AChE, and enhanced acetylcholine (Ach) levels. Moreover, immunohistochemistry and Western blot results showed that the M74 extract and oil reversed the scopolamine-induced increase in APP, BACE-1, and presenilin expression levels in the amyloid cascade and decreased BDNF and NGF expression levels in neuronal regeneration.

Improvement of Nutrient Uptake, Yield of Black Sesame (Sesamum indicum L.), and Alluvial Soil Fertility in Dyke by Spent Rice Straw from Mushroom Cultivation as Biofertilizer Containing Potent Strains of Rhodopseudomonas palustris.

The aim of the current research was to evaluate the effects of members of purple nonsulfur bacteria (PNSB), Rhodopseudomonas palustris strains of VNW02, TLS06, VNW64, and VNS89, mixed with spent rice straw (SRS) from mushroom cultivation as a carrier on promoting sesame growth and yield, and ameliorating the alluvial soil (AS) fertility in dykes. A 4 × 3 factorial experiment consisting of different levels of the solid PNSB biofertilizer mixture at 0, 3, 4, and 5 t·ha-1 (0, 1.81 × 108, 2.24 × 108, and 2.68 × 108 cells pot-1, respectively), and nitrogen (N) and phosphorus (P) inorganic fertilizer rates (100, 75, and 50 kg·N·ha-1; 60, 45, and 30 kg P2O5·ha-1, respectively) was performed in pots with the sesame variety of ADB1 in the dyked AS. The solid PNSB biofertilizer mixture at at least 3 t·ha-1 significantly enhanced the sesame seed yield by providing higher macronutrients for plants by increasing available N and soluble P concentrations in the soil. The solid PNSB biofertilizer mixture in addition to 75% of the recommended N and P fertilizers produced an equivalent yield in comparison to the utilized 100% of N and P inorganic fertilizers. The solid PNSB biofertilizer mixture in the SRS from the mushroom production reduced at least 25% of N and P chemical fertilizers for gaining the maximal seed yield and enriched soil characteristics for the sustainable black sesame cultivation in the dyked AS.

BREEDING POTENTIAL OF SESAME FOR WATERLOGGING STRESS IN ASIA

Sesame is an important oilseed crop in Asia that is often affected by waterlogging stress, leading to significant yield losses and reduced crop quality. Breeding waterlogging-tolerant sesame varieties is essential for ensuring the sustainable production of this crop in regions prone to waterlogging events. This review provides an overview of the challenges and opportunities associated with breeding sesame for waterlogging tolerance in Asia. We discuss the current state of sesame production in the region, sesame's physiological and morphological responses to waterlogging stress, and the genetic mechanisms underlying waterlogging tolerance. Moreover, we highlight the importance of identifying and utilizing waterlogging-tolerant sesame varieties and germplasm resources and the challenges in breeding waterlogging-tolerant sesame. Finally, we outline future perspectives for breeding waterlogging-tolerant sesame, including integrating traditional and modern breeding approaches, the potential for omics technologies and systems biology, and the role of climate-smart agriculture and sustainable management practices in mitigating waterlogging stress. By addressing these challenges, researchers and breeders can contribute to the continued success of sesame production in Asia and help to safeguard the livelihoods of millions of smallholder farmers who depend on this crop for their income and food security.

Integrating transcriptome and phytohormones analysis provided insights into plant height development in sesame

Plant height is a key agronomic trait influencing crops yield. The height of sesame plants is important for yield performance, lodging resistance and plant architecture. Although plant height is significantly distinct among sesame varieties, the genetic basis of plant height remains largely unknown. In this study, in order to tackle genetic insights into the sesame plant height development, a comprehensive transcriptome analysis was conducted using the stem tips from two sesame varieties with distinct plant height, Zhongzhi13 and ZZM2748, at five time points by BGI MGIseq2000 sequencing platform. A total of 16,952 genes were differentially expressed between Zhongzhi13 and ZZM2748 at five time points. KEGG and MapMan enrichment analyses and quantitative analysis of phytohormones indicated that hormones biosynthesis and signaling pathways were associated with sesame plant height development. Plenty of candidate genes involved in biosynthesis and signaling of brassinosteroid (BR), cytokinin (CK) and gibberellin (GA) which were major differential hormones between two varieties were identified, suggesting their critical roles in plant height regulation. WGCNA revealed a module which was significantly positively associated with the plant height trait and founded SiSCL9 was the hub gene involved in plant height development in our network. Further overexpression in transgenic Arabidopsis validated the function of SiSCL9 in the increase of plant height by 26.86%. Collectively, these results increase our understanding of the regulatory network controlling the development of plant height and provide a valuable genetic resource for improvement of plant architecture in sesame.

Quantification of design associated engineering properties of sesame (Sesamum indicum L.) seed varieties as a function of moisture content

AbstractThe investigation was intended to examine the influence of selected moisture levels (4.26, 12.66, 25.31, 37.89, 50.21% wet basis) on engineering properties namely, dimensional, gravimetric, frictional, aerodynamic as well as mechanical properties of five selected varieties of sesame seed namely GT‐3, GT‐4, GJT‐5, GT‐6, and TKG 22. The investigation finds out that fluctuations in moisture level significantly (p ≤ 0.05) influenced the engineering properties assessed. Increase in moisture content influenced a rise in length, width, thickness, geometric mean diameter, arithmetic mean diameter, sphericity, volume, volumetric expansion coefficient, elongation ratio, flakiness ratio, surface area, projected area, thousand seeds weight, compressibility index, Hausner ratio, angle of repose, coefficient of friction, terminal velocity and Reynolds number of selected sesame verities. Whereas, a reverse trend was observed in aspect ratio, true density, bulk density, tapped densities, drag coefficient, and hardness with moisture content variation. The frictional characteristic of the seed showed improved stability with less flow ability at higher moisture levels. These outcomes disclosed that variation of seed moisture content is authoritative during designing and construction of machinery and process equipment related to sesame. It may be also beneficial in computation of design for hoppers, silos, conveyors, drying, and heat transfer equipment as well as other sesame seed‐related process and handling equipment.

Comparative analysis of drought stress-induced physiological and transcriptional changes of two black sesame cultivars during anthesis.

Sesame production is severely affected by unexpected drought stress during flowering stage. However, little is known about dynamic drought-responsive mechanisms during anthesis in sesame, and no particular attention was given to black sesame, the most common ingredient in East Asia traditional medicine. Herein, we investigated drought-responsive mechanisms of two contrasting black sesame cultivars (Jinhuangma, JHM, and Poyanghei, PYH) during anthesis. Compared to PYH, JHM plants showed higher tolerance to drought stress through the maintenance of biological membrane properties, high induction of osmoprotectants' biosynthesis and accumulation, and significant enhancement of the activities of antioxidant enzymes. For instance, the drought stress induced a significant increase in the content of soluble protein (SP), soluble sugar (SS), proline (PRO), glutathione (GSH), as well as the activities of superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) in leaves and roots of JHM plants compared to PYH plants. RNA sequencing followed by differentially expressed genes (DEGs) analysis revealed that more genes were significantly induced under drought in JHM than in PYH plants. Functional enrichment analyses disclosed that several pathways related to drought stress tolerance, such as photosynthesis, amino acids and fatty acid metabolisms, peroxisome, ascorbate and aldarate metabolism, plant hormone signal transduction, biosynthesis of secondary metabolites, and glutathione metabolism, were highly stimulated in JHM than in PYH plants. Thirty-one (31) key highly induced DEGs, including transcription factors and glutathione reductase and ethylene biosynthetic genes, were identified as potential candidate genes for improving black sesame drought stress tolerance. Our findings show that a strong antioxidant system, biosynthesis and accumulation of osmoprotectants, TFs (mainly ERFs and NACs), and phytohormones are essential for black sesame drought tolerance. Moreover, they provide resources for functional genomic studies toward molecular breeding of drought-tolerant black sesame varieties.

Hybrid and native sesame seeds subjected to salinity

Sesame is a plant with great economic and social potential, being used for various purposes such as the food, pharmaceutical, medicinal industries, and more recently, as a source of renewable energy for the production of biofuel. One of the factors that most limit the productivity of this crop is salt stress. Based on this, the present work aimed to evaluate the germination and vigor of hybrid and creoles sesame seeds subjected to saline stress. The experiment was carried out at the Phytotechnics Laboratory of the Engineering and Agricultural Sciences Campus/UFAL. Two sesame cultivars were studied, BRS Anahí and Creole from the state of Sergipe. The seeds were aseptically treated by immersion in 70% alcohol for 1 minute, followed by washing in running water before being subjected to the treatments. To simulate salt stress, sodium chloride (NaCl) was used as a solute at concentrations of 0.0 (control); -0.1; -0.2; -0.3; -0.4 and -0.5 MPa. The material was placed, Biochemical Oxygen Demand (B.O.D.) germination type chamber, regulated at an alternate temperature of 20-30 °C. The experimental design used was completely randomized, with four replications of 25 seeds per treatments in a 2 x 6 factorial scheme (sesame cultivars x saline concentrations). Data were submitted to analysis of variance and polynomial regression, and the analyzes were performed using the SISVAR 5.6 software. The parameters evaluated were: water content, germination, first germination count, germination speed index, seedling length and dry mass. The results for the germination of sesame seeds submitted to salt stress showed that as the salinity levels increased there was a reduction in the percentage of germination of the sesame seeds studied, but until the concentration of -0.4 MPa they are within the standards allowed for commercialization of that culture. In the first count of germination, the Creoles sesame seeds showed the highest values, demonstrating better germination performance compared to BRS Anahí. In the germination speed index, BRS Anahí outperformed Creoles in all salt concentrations, except for the control. For seedling length, it was found that at the lowest salt concentrations both sesame varieties obtained the highest averages, with a significant reduction in length at the highest concentration (-0.5). The dry mass of the seedlings decreased as the water salinity increased, being more evident after the -0.3 MPa NaCl solution, especially for BRS Anahí. Thus, it can be concluded that salinity affects the physiological potential of sesame seeds, being more evident when at salt concentrations from -0.3 MPa. Creoles sesame seeds are less sensitive to saline stress.

The Impact of Various IPM Modules on the Management of Major Insect Pests of Sesame in Madhya Pradesh's Bundhelkhand Zone

The All India Coordinated Research Project Sesame Centre, College of Agriculture, JNKVV, Tikamgarh (M.P.) conducted a field experiment in 2017 kharif season using a Randomised block design to examine the effects of several IPM modules on the control of the main sesame insect pest. The experiment was set up using a Randomized Block Design with three replications, six treatments, and 21.6 M2 plots for each, using the sesame variety modrate resistant TKG -22 as the test variety. All of the plots' seeds were treated with imidacloprid 600 (5g/kg seed), and all plots except for the control were intercropping with black gram (3:3) and yellow sticky trap (1 trap/plot). Profenofos 50EC (2ml/L), NSKE5% (T1 and T2), two sprays of NSKE5% + NSKE 5%, Profenofos 0.1% (2ml/l)+ NSKE 5%, and Profenofos 0.1% were used as the treatment, with the untreated control side receiving no treatment. The results showed that treated areas with insecticides outperformed untreated areas by a significant margin. Of the treatments, treatment T5 (imidacloprid 600FS (5g/kg seed) foliar spray of NSKE5% at 30 & profenofos 0.11% (2ml/l)45 DAS) was the most effective and recorded the lowest population of Antigashtra (0.17) larvae/5plant). Bud flies were greatly diminished, and the populations of the three main sucking pests—mirid bugs (0.24 bugs per three leaves/plant), white flies (0.48 Nymphs per three leaves/plant were at their lowest. In T5 (imidacloprid 600FS (5g/kg seeds + intercropping with black gram 3:3) foliar srpray of NSKE5% at 30, & profenofos 0.1% (2ml/l), the seed equivalent yield was also greatly increased. 45 DAS had the highest seed equivalent yield of 1176 kg/ha, the highest net profit of Rs. 78667, and the highest B:C ratio (6.11); T4 had the highest seed equivalent yield of 1075 kg/ha, the net profit of Rs.70297, and the highest B:C ratio (5.48).

Yield Comparison of Bina Developed Four Sesame Varieties Under the Agro-Ecological Conditions of Gopalganj District of Bangladesh

An experiment was conducted during kharif (summer) season 2021 at the substation of Bangladesh Institute of Nuclear Agriculture (BINA), Gopalganj, Bangladesh. Yield and yield contributing attributes of BINA developed four sesame varieties were observed during the trial. A Randomized Complete Block Design (RCBD) with 3 replications was performed. The varieties were V1 = Binatil-1, V2 = Binatil-2, V3 = Binatil-3 and V4 = Binatil-4. Results from the experiment revealed that plant height, number of branches plant-1, number of pods plant-1, pod length, pod breadth, number of seeds pod-1, 1000 seed weight and seed yield were significantly different among the varieties. The tallest plant (106.00 cm) was found in Binatil-1 while shortest plant (77.33 cm) was observed in Binatil-3. It was observed that Binatil-2 had the foremost branches plant-1 (4.80) while the lowest number of branches plant-1 was found in Binatil-1 (0.33). Moreover, Binatil-3 showed the very best number of pods plant-1 (93.33) while Binatil-1 gave the lowest number of pods plant-1 (47.87). The largest pod was found in Binatil-1 (3.74 cm) while the smallest was found in Binatil-2 (2.42 cm). It had been recorded that Binatil-1 showed the maximum number of seeds pod-1 (76.97) while Binatil-3 gave the minimum number of seeds pod-1 (57.60). The highest number of thousand seed weight was recorded in Binatil-3 (3.12 g) while the lowest thousand seed weight was recorded in Binatil-1 (2.93 g). It had been detected that the variety Binatil-2 showed the highest seed yield (1.35 ha-1) while Binatil-1 gave the lowest seed yield (1.25 ha-1). The remarkable growth and yield performance of sesame from kharif season (summer) trial was observed at Binatil-2. And it will be helpful to select the varieties having high yield potential as well as future breeding materials of sesame in Bangladesh.
 Vol. 9, No. 3, December 2022: 247-251

Phytomediated Selenium Nanoparticles Improved Physio-morphological, Antioxidant, and Oil Bioactive Compounds of Sesame under Induced Biotic Stress.

Vegetable oil consumption is expected to reach almost 200 billion kilograms by 2030 in the world and almost 2.97 million tons in Pakistan. A large quantity of edible oil is imported annually from other countries to fill the gap between local production and consumption. Compared to other edible oil crops such as soybean, rapeseed, peanut and olive, sesame has innately higher (55%) oil content, which makes it an excellent candidate to be considered to meet local edible oil production. Oil seed crops, especially sesame, are affected by various pathogens, which results in decreased oil production with low quality oil. Selenium nanoparticles (SeNPs) work synergistically, as it has antifungal activity along with improving plant growth. Different concentrations of SeNPs were used, on three different varieties of sesame (TS-5, TH-6, and Till-18). Plant growth and development were accelerated by SeNPs, which ultimately led to an increase in crop yield. Morphological parameters revealed that SeNPs resulted in a growth increase of 55.7% in root length, 48% increase in leaf number/plant, and 38% in stem diameter. Out of three sesame varieties, TS-5 seedlings treated with 40 mg/L SeNPs showed 96.7% germination and 53% SVI at 40 mg/L. Sesame varieties dramatically increased antioxidant capability using SeNPs, resulting in 147% increase in SOD and 140% increase in POD enzyme units in TH-6 and 76% elevation in CAT enzymes in TS-5 (mean ± S.E). GCMS analysis revealed that bioactive compound I, sesamin, sesamol, and tocopherol contents were increased along with enhanced production of different unsaturated fatty acids. Kegg pathway analysis and MSEA revealed that these compounds were mainly involved in biosynthesis of unsaturated fatty acids, suggesting that SeNPs have elicited the biosynthesis of unsaturated fatty acids such as oleic acid, linoleic acid, and α-linoleic acid. This study concluded that SeNPs (40 mg/L) have an excellent capability to be used for crop improvement along with better oil quality.

Effect of seed processing treatments on oil quality of Ethiopian sesame varieties

ABSTRACT In Ethiopia, sesame is number one oilseed crop in terms of export value, but with low value addition practice. This research aimed to determine effect of varieties and pre-oil extraction treatments on yield and quality of the oil. Results showed that yield varied from 47.1 to 57.5% with iodine value (IV) from 106 to 113 g/100 g, free fatty acid (FFA) 0.47 to 1.36%, and peroxide value (PV) of 0.66 to 7.04 meq O2/kg. Palmitic, oleic and linoleic acid were the major fatty acids in the oil and characterized by high unsaturated (80–85%) and less saturated (15–20%) fatty acids. All pre-oil extraction treatments increased the oil content, with minor effects on color, FFA, and PV as compared to the oil from the raw seed. However, roasting enabled to extract better oil yield with low PV and less constitutes of FFA.

Irrigation and production of seeds of various sesame varieties in the conditions of Karakalpakstan

Irrigation and production of seeds of various sesame varieties in the conditions of Karakalpakstan

Effects of Extrusion Variables on Some Chemical and Functional Properties of Thermo-extrudates from Selected Varieties of Sesame (Sesamum Indicum L)

This study examined the effects of extrusion conditions of Feed moisture (FM) (14 – 25% wb) and Screw speed (SS) (250 – 350 rpm) at constant barrel temperature of 100oC on some chemical composition and functional properties of thermo-extrudates from three sesame varieties (Bogoro, E8, and Ex-Sudan), using central composite rotatable design on water absorption (WAC) and oil absorption (OAC) capacity, bulk density (BD), solubility (SOL) and swelling capacity (SC). The protein content of thermo-extrudates significantly (p<0.05) decreased with FM and increased SS. The tannin content in the thermo-extrudates ranged from 11.0 to 14.17; 9.83 to 12.50; and 7.50 to 12.65 (mg/100 g), the phytate content ranged from 19.33 to 25.00; 17.00 to 21.50 and 16.0 to 22.83 (mg/100 g) in Bogoro, E8, and Ex-Sudan respectively. An increase in FM and SS (p<0.05) reduced tannin by 41%, 40% and 46%, and phytate by 28%, 32%, and 30% in Bogoro, E8,and Ex-Sudan. Solubility was the most predictable functional property of the thermo-extrudates, with models having coefficients of determination (R2) of 0.99, 0.82, and 0.86 for Bogoro, E8, and Ex-Sudan. The optimized processing conditions for E8 with desirability of 0.74 are FM 14% and SS 250 rpm, which resulted in optimal WAC of 168.55%; SOL 14.36%; OAC 138.27%; BD 0.67 g/cm3; SC 1.53%.