Dioscorea Hispida Research Articles

Acceptability of Cookies with Dioscorea Hispida as Local Pastry

Acceptability of Cookies with Dioscorea Hispida as Local Pastry

Potential of Dioscorea spp. for Bioethanol Production Using Separate Hydrolysis and Fermentation Method

Thailand is globally recognized for its rich biodiversity, a characteristic that extends to the diverse species of indigenous yams within the Dioscorea spp. genus. With the energy crisis, the selection of agricultural materials for ethanol production to replace the use of economic crops is therefore necessary. This research focuses on six specific yam varieties: Amorphophallus konjac, Colocasia esculenta, Dioscorea bulbifera, Dioscorea alata, Dioscorea hispida, and Dioscorea esculenta. The primary objective is to investigate their bioethanol productivity through the implementation of a separate hydrolysis and fermentation process, with the broader aim of contributing to the potential preservation of these invaluable indigenous yam species. Initiating the study, the experimental samples underwent hydrolysis by alpha-amylase enzyme (1% w/winitial starch) for 180 min, followed by glucoamylase enzyme (1% w/winitial starch) for an additional 72 h. Post the initial hydrolysis, the detection of small molecule sugars by high-performance liquid chromatography, revealed a range of 14.49 ± 1.10 to 28.89 ± 0.03 gtotal sugar/L, with maltose emerging as the predominant sugar compound. Subsequent to the second hydrolysis, it was observed that maltose and starch residues across all six samples underwent successful digestion. The peak glucose productivity was attained at the 12-h mark post-glucoamylase hydrolysis. Among the diverse yam varieties under examination, Dioscorea hispida exhibited the highest glucose production, showcasing a hydrolysis efficiency of 62.53 ± 2.08%. Following the fermentation process with S. cerevisiae, the optimal fermentation time was identified as 72 h, at which point all available glucose in the hydrolysate was fully utilized. The bioethanol productivity spanned from 32.31 ± 3.40 to 43.66 ± 0.02 g/L, with Dioscorea hispida demonstrating the highest ethanol productivity at 0.61 ± 0.00 g/L/h, and a yield of 0.42 ± 0.01 gEtOH/gGlucose. These findings underscore the potential of Dioscorea hispida as a promising contributor to bioethanol production.

Dioscorea hispida (Dennst.) Tuber: Unraveling The Phytochemical Basis for Anthelmintic and Antifungal effects

Tropical diseases are prevalent ailments that manifest in tropical and subtropical regions in 149 countries. Various microorganisms, including bacteria, fungi, and worms, are responsible for the onset of tropical diseases. This infectious disease is frequently observed in nations with lower economic resources. The tubers of Dioscorea hispida possess the capacity to demonstrate anthelmintic and antifungal characteristics as a result of the existence of secondary metabolites. The tuber of Dioscorea hispida will undergo extraction followed by liquid-liquid fractionation using n-hexane, ethyl acetate, and ethanol-water solvents. The antifungal activity of the extracts and fractions was evaluated in vitro against Candida albicans and Trichophyton mentagrophytes for antifungal activity, and the anthelmintic activity was evaluated in vitro against Pheretima posthuma during paralysis and death for anthelmintic activity The extract Dioscorea hispida (Dennst) tuber showed good anthelmintic and antifungal efficacy; The phytochemical component in the ethyl acetate fraction had the highest performance at a concentration of 30 g/L with paralysis time of 23.90±2.94 and death time of 34.20±2.31 for anthelmintic, in line with that the ethyl acetate fraction also has antifungal activity which is strong at a minimum inhibitory concentration of 5 g/L with an inhibition zone diameter of 11.00 ± 0.40. The ethyl acetate fraction contains several metabolites, including alkaloids, flavonoids, glycosides, and tannins, which exhibit notable effectiveness as anthelmintics and antifungals.

Modification of gadung (Dioscorea hispida Dennst) starch by ultrasonication and freeze moisture treatment

Gadung starch (Dioscorea hispida dennst.) has several weaknesses related to its low functional properties and stability. Physical modifications of ultrasonication and Freeze Moisture Treatment (FMT) can be an alternative to improve the functional properties by forming cracks and cavities in starch. Hence, this research aimed to obtain modified gadung starch with better functional and physicochemical properties through ultrasonication and FMT. The combination of ultrasonication 30 min + FMT 70 % produced the desired characteristics. This includes the functional properties of starch, which revealed that swelling volume increased by 1.19-fold, solubility increased by 1.17-fold, and Water Absorption Capacity (WAC) increased by 1.31-fold. The stability of the starch paste was better, with a decrease in Breakdown Viscosity (BV) from 3093.50 to 2408.00 cP. The physicochemical properties exhibited that the surface of the starch granules had cracks and cavities, the starch was more amorphous, and the crystallinity decreased from 35.75 to 32.06 and the smaller ratio of the bands at 1045/1022 from 1.412 to 1.396 by FTIR spectra. However, the treatments did not cause changes in crystallinity type (B-type) and functional groups. Therefore, the combination treatment of ultrasonication and FMT effectively improved the properties by forming amorphous gadung starch.

Gadung (Dioscorea hispida) tuber starch modified by freeze moisture treatment and heat moisture treatment: a study of functional, pasting, and physicochemical properties

ABSTRACT Gadung starch has limitations in several functional properties and thermal stability. Modifying starch through temperature treatments such as Freeze Moisture Treatment (FMT) and Heat Moisture Treatment (HMT) potentially improves these weaknesses. This research aimed to determine the effects of FMT and HMT on the functional, pasting, and physicochemical properties of gadung starch. This study consisted of a variety of treatments, namely native starch, FMT, HMT 100°C, HMT 110°C, FMT + HMT 100°C, and FMT + HMT 110°C. The results showed that FMT and HMT treatments significantly affected the functional, pasting, and physicochemical properties of gadung starch. The combination modification treatment of FMT + HMT 110°C increased swelling volume by 1.44 times, and water absorption capacity increased by 1.37 times. This was confirmed by the formation of porous and amorphous starch granules. Modified starch also had the best heat stability, as indicated by a low breakdown viscosity of 31.00 ± 9.90 cP. FMT+HMT110°C modified treatment was the best treatment because it had more pores, cracks, and higher swelling volume. The starch crystallinity index of modified starch decreased from 35.75 to 31.58 and changed the crystallinity type from B-type to A-type. The starch modification did not cause changes in functional groups but reduced crystallinity as indicated by the smaller ratio of the bands at 1045/1022 and the higher ratio at 1022/995 from FTIR spectra. Thus, FMT and HMT could effectively improve the characteristics of gadung starch by forming heat-stable amorphous starch.

Development of Gadung Tuber Processing E-Module Based on Discovery Learning at SMAN 1 Seteluk, West Sumbawa Regency

This research aims to determine the feasibility of an e-module for processing gadung tubers (dioscorea hispida) based on a discovery learning model and to determine the readability test of developing an e-module for processing gadung tubers (dioscorea hispida) based on a discovery learning model by students in class X-6 of SMA Negeri 1 Seteluk. This e-module was developed using a 4D development model by Thiagarajan, but this research was limited to the 3D stage. The 3D stages are Definition, planning (Design) and development (Develop). Based on the research results, it shows that the e-module was declared valid according to the validation results of 63.75%, the readability test by teachers was 78.75% and the readability test by students was 76.13%. Thus, e-modules are suitable for implementation in the learning process by teachers in the future.

Study of Total Phenols, Flavonoids, Antioxidant and Antibacterial Activities from Dioscorea hispida Tubers

The tubers of Dioscorea hispida Dennst., a Dioscoreaceae plant, contain flavonoid molecules and plant secondary metabolites that are antioxidants and antibacterials. In this study, the total phenolic content and flavonoids from the ethanol extract and fraction (n-hexane and ethyl acetate) of Dioscorea tuber were investigated for their antioxidant and antibacterial properties. Fractionation with n-hexane and ethyl acetate followed by diffusion with 96% ethanol. The Folin-Ciocalteau reagent measured total phenol at 765 nm, and the AlCl3 method measured total flavonoid at 440 nm using a visible spectrophotometer. The DPPH assessed the antioxidant activity, whereas the antibacterial activity against Staphylococcus aureus and Escherichia coli was determined using agar diffusion on paper discs. The extract, n-hexane fraction, and ethyl acetate exhibited total phenolic content of 33.02, 5.95, and 156.33 mg GAE/g extract, respectively. Similarly, the total flavonoid content was measured at 20.26, 14.31, and 74.02 mg QE/g extract. The extract, n-hexane fraction, and ethyl acetate of the Dioscorea tuber exhibited minimum inhibitory concentrations (MICs) of 8.25, 7.76, and 10.30 mg/mL against S. aureus and 8.51, 8.31, and 12.05, against E. coli, respectively. The findings of this study indicate that the ethanol extract and n-hexane fraction derived from Dioscorea tubers exhibited comparatively diminished antioxidant and antibacterial properties in comparison to the ethyl acetate fraction. Furthermore, the ethyl acetate fraction exhibited elevated concentrations of total phenols and total flavonoids in comparison to the remaining fractions.

Creative House Strategy For Increasing The Creativity Of Micro, Small And Medium Enterprises (Umkm) Pappandangan Village Polman District

The process of building the Village Creative House will have a new icon in increasing visitors and the economy of the local community. The function of the Village Creative House is as a place for training, mentoring, a place for production, a place for marketing the community's creative products and a place for the incubation process for creative products in Pappandangan village. This activity involved human resources from the Youth, Sports and Tourism Department of Polewali Mandar Regency, lecturers and students from Al Asyariah Mandar University as well as residents of Pappadangan village. The sub-activities in making Creative Houses are: village creative house building design, interior creation, wall decoration design, production training place layout, training place layout, marketing place creation layout. Apart from that, assistance is also provided to the community, namely: assistance to village art studios, assistance in processing typical village foods, assistance in processing Gadum plants (Dioscorea hispida) into chips and flour.

Hydrolysis profile of gadung (dioscorea hispida dennst) starch to glucose using alpha amylase enzyme

Indonesia is an agrarian Country that has abundant natural resources. It has potential to be used as industrial raw materials such as sugar reduction from starch. Gadung, which is abundant in Gandus and it can be monitored for its presence in the dry season, is one source of starch. The aims of this research is to obtain glucose with a high yield percentage, to know the optimum concentration of α-amylase enzyme to hydrolysis gadung starch into glucose, and to know the relationship between hydrolysis time and concentration the glucose formed by the addition of the enzyme variation. The implementation of the research is carried out in three stages, first is preparation of raw materials, hydrolysis of gadung starch into glucose enzymatically, and analysis of glucose level using the UV-Vis spectrophotometry with Nelson reaction. The free variables used are the time variation of hydrolysis 0, 10, 20, 30, 40, 50 minutes and alpha amylase enzyme 1 %, 2 %, 3 % b/v. The optimum hydrolysis results on this study were at 1 % b/v enzyme variation, 10 minutes hydrolysis time, and a temperature of 90 oC. The yield of glucose concentration is 255.35 ppm. From this reseach, it is known that the longer the starch hydrolysis takes place, the observed glucose tends to experience in fluctuative consentration caused by the increase of α- amylase enzyme variations.

Gadung (Dioscorea hispida Dennst) starch for bifunctional purposes: Wastewater treatment by photocatalytic systems and bioplastic production

Starch contains high levels of amylose and amylopectin and has good biodegradability, making it an attractive alternative biopolymer raw material and is considered to have important commercial value because of its various industrial applications. In this study, bifunctional gadung starch is used to manufacture bioplastics and for photocatalyst wastewater degradation. The use of gadung starch as a photocatalyst was investigated by comparing two temperature variations, i.e., 150 °C and 200 °C. The results of the analysis showed that heat treatment of starch at 200 °C could degrade nitrophenol waste by up to 66.66 %. Bioplastics produced with three times higher starch concentration than other samples have a good mechanical property, i.e., a tensile strength of 21.61 MPa and a degradation percentage of 90 %. The use of gadung starch for bifunctional purposes: photocatalyst and bioplastics is a new development in research in recent years.

Gadung tuber pasta drying: kinetic model development and physical quality evaluation

Gadung tuber (Dioscorea hispida dennst.) is a carbohydrate-rich food source that is easily found in Indonesia. Studies have been carried out on pretreatment methods to reduce antinutritional compounds in gadung tubers. So gadung tubers can be promoted as the raw materials of several food products such as pasta. Drying is the most crucial process that will determine the final quality of the pasta product. This study aimed to investigate the kinetic models of gadung tuber pasta drying and its physical quality. Four thin-layer models (Newton, Page, Handerson-Pabis and Logarithmic) were employed to find the selected model. The gadung tuber pasta was formulated using low, medium, and high protein wheat flour and then was dried at a temperature of 30-70℃. The moisture content was observed every 30 mins for 240 mins. The result showed that the moisture reduction was higher in higher drying temperatures and lower protein wheat flour. The Logarithmic model was selected to predict the drying kinetics of gadung tuber pasta drying with the highest value of R2 and the lowest value of RMSD. The cyanide content in gadung tuber pasta meets the standard, indicating that the gadung tubers pasta may safety to consume.

Planting patterns in rubber agroforestry (Hevea brasiliensis) developed by the communities of Menggala Mas Village, Lampung Province, Indonesia

Abstract The agroforestry system provides important economic and ecological benefits for local communities, one of which is obtained from the application of planting patterns and plants species in it. This research aims to explain the planting pattern of rubber agroforestry developed by the community in Menggala Mas Village, Lampung Province, Indonesia. The approach in this research is qualitative. Data collection methods included observation, in-depth interviews, and documentation studies. The planting patterns of agroforestry system on their rubber plants were analysed. The research results showed that there are three agroforestry planting patterns implemented by the community, namely, alley cropping, trees along border and random mixture. The dominant combinations in alley cropping were rubber/karet (Hevea brasiliensis) – pulai (Alstonia scholaris) and rubber–mentru (Schima wallichii) – kayu afrika (Maesopsis eminii). The dominant combinations in trees along border were rubber–akasia (Acacia auriculiformis), rubber–jackfruit (Artocarpus heterophyllus) – cempedak (Artocarpus integer) and rubber–petai (Parkia speciosa) – jati (Tectona grandis). The dominant combinations in the random mixture were rubber–jengkol (Pithecellobium lobatum), rubber–petai–jengkol–akasia, rubber–jackfruit–cempedak, rubber–pulai–mengkudu (Morinda citrifolia L.) – jengkol and rubber–banana (Musa paradisiaca) – gadung (Dioscorea hispida) – sungkai (Peronema canescens Jack). Forty-one plant species were found. The local community wants to develop this planting pattern because the rubber agroforestry planting pattern can provide direct and indirect benefits such as a greater variety of plants which can increase their income; also, the products can be sold or consumed by the family, as a fence, fire break or barrier to other farmers’ land, can provide shade to reduce hot temperatures when farmers are working, and can reduce the risk of flooding and soil erosion to support soil and water conservation within the ‘Omou’ (garden/forest). The government and agricultural extension workers need to carry out regular guidance and outreach programmes regarding rubber agroforestry development strategies to increase public knowledge.

Indigenous Knowledge in Reducing HCN Content in the Processing of Gadung Tubers (Dioscorea hispida) as Student Teaching Materials

The research aims to understand the indigenous knowledge of the community in processing gadung tubers (Discorea hispida) and to identify the most effective variations in reducing HCN content for educational purposes, specifically in the form of an Environmental Knowledge Module for students in the Biology Education program at FKIP Cordova University. The research methodology involves an experimental approach with four core stages: conducting surveys and interviews with the community in Beru Village, Jereweh District, West Sumbawa Regency; developing observation sheets for gadung tuber processing based on local knowledge; and engaging in practical activities with the research team, the community, and two biology education students. The research results, based on the module validation, show an average score of 77.5%, categorizing it as good. The conclusion of the study is that the most effective variation in reducing HCN content involves the addition of 300 grams of salt compared to other variations, along with the inclusion of squeezed castor leaves juice. The practical activities conducted in accordance with the local knowledge of Beru Village community in Jereweh District have progressed well, producing gadung sticks as safe-to-consume food products.

SCREENING FOR ANTI-HYPERURICEMIA POTENTIAL OF SOME INDONESIAN MEDICINAL PLANTS THROUGH XANTHINE OXIDASE INHIBITION IN VITRO ASSAY

Objective: This study aimed to examine the in vitro xanthine oxidase inhibitory activity of 12 plants commonly used as gout medicines by the Indonesian people.
 Methods: The measurement of xanthine oxidase enzyme inhibitory activity was using UV spectrophotometry. The in vitro assessment of xanthine oxidase inhibition activity was tested on extracts from Eleutherine bulbosa (Mill.) Urb. Bulbs, Pandanus amaryllifolius Roxb. leaves, Alyxia reinwardtii Blume stem barks, Ruta angustifolia Pers aerial parts, Dioscorea hispida Dennst tubers, Plantago major L. leaves, Symphytum officinale L. roots, Euphorbia hirta L. aerial parts, Chromolaena odorata L. leaves, Solanum torvum Sw fruits, Peperomia pellucida L. Kunth. aerial parts and Strobilanthes crispa L. Blume leaves.
 Results: The results of this study showed that all tested plant extracts can inhibit xanthine oxidase activity with IC50 values varying from 27.80 µg/ml to 47.14 µg/ml. The IC50 value of allopurinol, used as positive control, was 1.24 µg/ml. Among all the tested plant extracts, Strobilanthes crispa L. Blume leaves extract has the best inhibitory activity against xanthine oxidase enzyme with IC50 value of 27.80 µg/ml.
 Conclusion: Strobilanthes crispa L. Blume leaves extract has the best inhibitory activity against xanthine oxidase, so It has the potential to be developed into herbal medicine to treat hyperuricemia. This study provides scientific support for the anti-hyperuricemia activity of these herbs, which are empirically used to treat gout.

Traditional Ecological Knowledge of Wild Tubers Used by The Orang Asli Bateq Tribe on The East Coast of Peninsular Malaysia

Indigenous tribes and rural communities around the world are known to rely on various plant parts for their livelihood and nutrition, most notably for food. This research aimed to examine and document the traditional ecological knowledge (TEK) of wild tuber food plants used by the Orang Asli Bateq tribe of Peninsular Malaysia. The findings of this study are critical to scientifically identify and document food sources from the forest that contribute to the tribe's livelihood and, possibly, future food security. In the Bateq villages, information was gathered via semi-structured surveys, field trips, group discussions, and key informant interviews. The results show that TEK influenced the use of wild tubers inherited from their ancestors. The Bateq ate at least 11 different types of wild tubers, including Dioscorea orbiculata, Dioscorea prainiana, and Dioscorea hispida. Most of these wild tubers are from the Dioscoreaceae plant family and must be properly processed before being consumed. The elements related to the traditional knowledge of the wild tubers are the harvesting skills and the practice in the utilization of the plant. The survey also suggests that the selection to use plant tubers is prompted by its delicious taste and nutritional value while being natural and unpolluted food. In terms of plant sustainability, the majority of the Bateq will follow certain conservation techniques to maintain the plants' availability. Understanding what underlies TEK and the tribe's practices in using wild plant resources will preserve the natural legacy of forest resources and biodiversity, and possibly contribute to future food security.

Histological Structure of Male Wistar Rats’ Stomach Fed with Yam Tuber Flour Supplementation

A residential rat might harm human health because it acts as a disease reservoir. It has been many efforts to control this rate using synthetic rodenticide. Nevertheless, synthetic rodenticides broke the environment and made rats resistant. Yam (Dioscorea hispida) tube application on rat’s bite could solve the problem. This study evaluated the histology of male Wistar rats (Rattus norvegicus) fed with bite block supplemented with different yam tuber flour concertation to control residential rat populations. Five different treatments were applied with five replications. The treatments were negative control and brodifacoum 0.005% (positive control), 30%, 50%, and 70% of yam tuber flour. The results show that yam tuber supplementation caused damage to male Wistar rat stomachs, as indicated by mucosal erosion and the presence of inflammatory cells. The statistical test indicated that stomach damage significantly differed among treatments, with the severest damages caused by 50% yam tuber supplementation. It could be concluded that the rat’s bite containing yam tuber flour caused stomach damage, and the feed bite containing 70% yam tuber flour was the most effective. This result proved that yam tuber has good potential as a natural rodenticide to control residential rat populations.

Potential 3D filament of Janeng (Dioscorea hispida Dennst) starch: Preparation and characterization

The preparation and characterization of filaments from janeng have been studied. The janeng filament (PCl-JS) process starts with the preparation and gelatinization of janeng starch, and then the resulting starch gelatinization, which is usually called thermoplastically processable starch (TPS) is carried out by filament processing by mixing PCl-g-GMA and JS at a temperature of 170 °C and 80 rpm for 15 min. The prepared filaments were analyzed. SEM studies show that the fracture surface of PCl-JS0 filaments provides a uniform fiber dispersion, in contrast to the morphology showing large and interconnected starch domains as the starch concentration increases from 1% to 9%. The intensity of hydrogen bonds observed in the spectrum via FTIR increased in band as the concentration of JS increased. XRD analysis observed that the crystallinity and crystal size of filaments without starch were higher than those of other PCl filaments that had undergone modification with starch. Mechanical analysis showed that starch did not have a negative effect on the tensile strength of the filaments, indicating good compatibility between JS and the PCl matrix. When the additional concentration of JS increased to 9%, the strength of PCl-JS filaments increased to 37 MPa, which was caused by the higher crystallinity induced by starch. The glass temperature of the filament sample was observed using DSC, which showed that PCl without JS occurred at 48.2 °C and shifted (+2 °C) towards 49.4 °C when JS was added. For all DSC curves, the exothermic peak was observed around 56–59 °C. The melt flow behavior of PCl-JS filaments decrease with increasing starch content.

Physico-chemical compositions, nutraceutical properties, and starch-related techno-functional, thermal, and morphological characteristics of underutilized yam flour (Dioscorea spp.) from Odisha

High-yielding wild species of yam (Dioscorea spp.) play a vital role in the diet, nutritional, and economic stability of the tribal community. Lack of in-depth research provides scant information on the nutritional value and quality characteristics of tubers. In the present study, physicochemical, nutraceutical, antinutrients, structural, morphological, and thermal properties of lesser-known yam species: Dioscorea pentaphylla (five-leaf yam), Dioscorea bulbifera (bitter yam), Dioscorea hispida (intoxicating yam), and Dioscorea tomentosa (locally called ‘targai kanda’) were investigated. Total protein, fat, fiber, ash, carbohydrate, and metabolic energy of the investigated species are 5.05–8.79%, 0.33–1.01%, 3.53–14.15%, 3.30–5.31%, 62.60–78.26%, and 1241–149 kJ/100 g, respectively. Significant variations (P ≤ 0.05) were observed among the species for antioxidant, bioactive compounds, and physicochemical attributes, where Dioscorea tomentosa exhibited the highest antioxidant capacity. The starch and amylose content varied between 24.7–57.8% and 12.7–29%. X-ray diffractograms of D. pentaphylla and D. bulbifera displayed a B-type pattern, A-type starches in Dioscorea hispida, and CB–type starch for D. tomentosa. The FT-IR spectra confirmed the polysaccharide nature of the yam flours. The particle size ranged between 9.6 and 72.4 μm. The TG/DTG curves revealed that the yam flour could be subjected to cooking up to 180 °C without carbonization. The reported wild yam flours may have tremendous potential for industrial application. However, the study revealed that the presence of antinutrients might affect the mineral bioavailability, cause toxicity, and health hazards. Thus, this could be overcome by processing before safe consumption. The current study also recommended that these wild yam species are safe and can meet potential nutrition and food security through mainstream cultivation.

A green metrics approach toward antibacterial chitosan/starch‐based films reinforced with garlic oil for extending the shelf‐life of Capsicum annum

SummaryThe study aimed to develop chitosan (Ch)/starch‐based films for the preservation process of Capsicum annum, and further consider the green metrics approach for sustainability. Three types of starches derived from Dioscorea sp. were used: Dioscorea alata (Da), Dioscorea esculenta (De) and Dioscorea hispida (Dh). To further enhance the coating performance, garlic oil (GO) was incorporated, resulting in improvements in physical and mechanical properties, antioxidant and antibacterial activity. A comprehensive characterisation was conducted to assess the impact of GO on the Ch/starch environment. The presence of GO increased hydrophobicity, improved mechanical properties and thermal stability. Moreover, Ch/starch/GO films exhibited antioxidant and antibacterial activity compared to Ch/starch films. Finally, the application of the Ch/starch/GO on C. annum demonstrated an improvement in visual appearance, bacterial growth and extended its shelf life during storage. These findings highlight the potential of Ch/starch/GO as an effective approach for enhancing the properties and preservation of agricultural products.

Test of effectiveness Gadung tuber extract (Dioscorea hispida Dennst.) against cacao pod sucker pest (Helopeltis Spp.) in the laboratory

One of the obstacles in cacao cultivation is the presence of cacao pod sucking pest (Helopeltis spp.) which may lead to decrease the production 50-60%. Using vegetable pesticides extracts of gadung tuber (Dioscorea hispida Dennst.) is an alternative for controlling cacao pod sucking pest (Helopeltis spp.). This study aims to obtain an effective concentration of gadung tuber extract to control Helopeltis spp. The research was conducted at the Plant Pest Laboratory, Faculty of Agriculture, Riau University. The study was conducted from September 2021 to November 2021. This study used a completely randomized design (CRD) with five treatments and three replications in order to obtain 15 experimental units. The treatments that given were the concentration of gadung tuber extract 0%, 70%, 80%, 90% and 100%. Observation parameters consist of the initial time of death, lethal time 50, daily mortality, total mortality, temperature and humidity. The results showed that the concentration of 90 g.l-1 water or 9% is an effective concentration for controlling cacao pod sucking pest (Helopeltis spp.) with an initial time of death of 4.66 hours, a lethal time of 50 at 14 hours and total mortality 86.66%.