Leaf Waste Research Articles

Picloram-induced enhanced callus-mediated regeneration, acclimatization, and genetic clonality assessment of gerbera

BackgroundGerbera jamesonii Bolus ex Hooker f. (African daisy) is listed among the top five most important ornamental plants in the global floricultural industry. To satisfy its demand, the floriculture industry relies on reproducible and effective propagation protocol while retaining the genetic uniformity of G. jamesonii. The present study, for the first time, reports the potential of picloram for enhanced induction of organogenic calli from leaves of G. jamesonii and its high-frequency indirect regeneration. ResultsThe fastest induction of calli with maximum fresh and dry weight was recorded in the Murashige and Skoog (MS) semisolid medium supplemented with 1 mg/l picloram. In addition, callus induction was observed in 2,4-dichlorophenoxy acetic acid- and α-napthaleneaceticacid-supplemented media but with delayed response and reduced fresh and dry weight. The proliferated calli were transferred to shoot induction media containing MS salt and 0.5–1 mg/l N6-benzylaminopurine, kinetin, or thidiazuron. A mean number of ~6 shoots per callus were developed after 5 days of culture in the MS medium supplemented with 1 mg/l kinetin, with a mean length of 5.2 cm. Successful rooting of shoots was achieved in the MS medium fortified with 1.5 mg/l indole-3-acetic acid, wherein the earliest root initiation (~5 days), as well as the maximum number (~9) and length (~4.8 cm) of roots, were recorded. Complete plantlets were primarily acclimatized in sand before being transferred to a mixed substrate (of soil, sand, tea leaf waste, and cow urine) that secured >90% survival and further growth of the plantlets. Eventually, clonal fidelity of the in vitro regenerants assessed via inter-simple sequence repeats (ISSR) primers exhibited a monomorphic banding patterns that suggested genetic integrity within the plantlets as well as with their mother plant. ConclusionsThe results of the present study should be of interest for commercial propagation and mutagenesis- as well as genetic transformation-related research.

PELATIHAN PEMBUATAN DAN PEMENTASAN SEDERHANA WAYANG GODHONK BERBAHAN LIMBAH DAUN KERING SEBAGAI UPAYA PENINGKATAN PENGETAHUAN SENI BUDAYA BAGI ANAK USIA DINI DI SANGGAR SENI MIJILAN, DUSUN PRINGAPUS, KALISALAK, SALAMAN, MAGELANG

Abstract Early childhood (PAUD-TK) is considered a sensitive period or sensitive period in children, namely a period where certain functions need to be stimulated physically-motor, intellectual, social, and emotional. This form of stimulation is in the form of education and teaching for families, communities, and schools. The effort also aims to raise the character of students, namely the subtlety of feelings (morals), which will then produce intelligence of the mind, and produce will power. To educate these feelings, Ki Hadjar Dewantara said that there are 2 things that must be passed, firstly, education on the subtleties of spiritual life which is called moral education and the second is aesthetic education. Wayang by Ki Hadjar Dewantara is included as an aesthetic education that can smooth the feeling of beauty towards all external objects. Wayang is an ancestral heritage that is rich in artistic and cultural meaning that deserves to be introduced to early childhood. This is the case with Wayang Godhong. The puppets, which are made from godhong (leaves) of teak and coffee, are the fruit of Gus Pur's ideas and should be introduced to children from an early age. The hope is that they will get to know the unique Wayang Godhong as a medium that will bring them closer to art and culture and their love for nature. Through the service that will be carried out in Magelang Regency, precisely in the Mijilan Art Studio, Pringapus Hamlet, Kalisalak, Salaman, Magelang. children will be invited to see the manufacturing process, practice making with dry leaf waste, and perform it in a simple way.

Prospek Bisnis Briket Daun Kering dalam Kegiatan Pendampingan dan Pemberdayaan Masyarakat Surabaya Menuju Ekonomi Sirkular

Waste processing activities through the 3R program (reduce, reuse and recycle) must be accompanied by reducing the volume/amount of waste itself. One way is to process waste starting from the source, among others, from dry leaf waste around our home environment. Community assistance activities in the use of dry leaves in the manufacture of charcoal briquettes as an alternative energy for environmental facilitators and Surabaya residents have been successfully carried out. The response of the residents was very positive and very enthusiastic in participating in this activity. The stages of implementing activities through workshops, training and mentoring are carried out in the form of lectures, questions and answers and direct practice in making briquettes. The results obtained in this community service are the formation of three superior briquette villages, namely Babat Jerawat, Tembok Gede and Ondomohen. The residents independently have succeeded in designing and making their own briquette printing equipment by utilizing used goods around them and making charcoal briquettes from dry leaves or burnt coconut shell charcoal and even has succeeded in marketing it even though it is still within the scope of the closest neighbors. Education about business prospects and marketing strategies was also given during training in empowering urban communities and responding to existing business opportunities and prospects so that they had a circular economy impact for community members to improve family welfare.

PEMANFAATAN DAUN PINUS JARUM UNTUK DIJADIKAN BRIKET BIOCOAL SEBAGAI ENERGI LISTRIK ALTERNATIF

Biomass is organic material produced through the photosynthetic process in the form of products or waste. Examples of biomass include plants, trees, grass, agricultural waste, forest waste, feces and livestock manure. This biomass can be used as an alternative fuel to replace petroleum which is suitable for development in Tarakan. One of the abundant sources of biomass is needle pine leaves which are found on the UBT campus, Pesisir Charity Beach and Tarakan City Nursery. The selection of fallen needle pine leaves as biomass in this study was based on the absence of utilization of pine leaf waste. Thus, in this study, dry needle pine leaf waste will be utilized to make briquettes mixed with coal with a variant of adhesive composition. There are 3 types of adhesives used, sago, starch starch and clay. Of the 3 types of adhesives, each sample was tested to obtain the value of moisture content, ash content, heat and electrical energy. Briquettes can be said to be good if they have a water content value below 8% according to SNI. Where the water content in the sago adhesive is in the range of more than 6%, while for starch adhesive it is in the range of 5%-6% and for clay adhesive the value is in the range of 5%-7%. The ash content in this study has met the SNI standard, which is below 8%, but the clay adhesive has an ash content close to 8%, which is 7.95%. The value of voltage and current is influenced by the composition of the sample, where the smaller the percentage of the pine leaf content, the smaller it is, and vice versa. The calorific value is obtained from the analysis of existing data to obtain a large enough heating value, which is in the range of 4500 J.

High Potential of Averrhoa bilimbi Leaf Waste as Porous Activated Carbon Source for Sustainable Electrode Material Supercapacitor

The energy cost-effective/free-environmental pollution concerns have an interest in bio-waste materials for the production of porous activated carbon, especially as electrode material for electrochemical energy storage devices such as li-ion batteries and supercapacitors. In this study, Averrhoa bilimbi leaf wastes were selected as a porous activated carbon source for sustainable electrode material supercapacitor. Porous activated carbons were prepared by chemical activation of 0.5 ml−1 sodium hydroxide solution at an optimum temperature of 800 °C pyrolyze in an environment of N2 and CO2 gases. The monolith coin shape of activated carbon is maintained by optimizing the self-adhesive properties of the precursor without the addition of adhesive materials. All coin monoliths feature a turbostratic to highly amorphous carbon structure. Furthermore, the relatively high monolith dimensional shrinkage of 42.00% initiated the development of a better pore framework carbon. In symmetric supercapacitors, electrochemical behavior confirmed a high specific capacitance of 149.04 F/g at a constant density of 1.0 A/g. Moreover, the maximum energy density was found of 10.50 Whkg−1 at an optimum power density of 116.35 W/kg in an aqueous electrolyte of 1 ml−1 Na2SO4. With bio-recycled waste, relatively easy preparation, and high electrochemical properties, porous activated carbon based on Averrhoa bilimbi leaf has great potential as a sustainable electrode material for supercapacitor energy storage applications.

Cycle-Tempo Simulation of Ultra-Micro Gas Turbine Fueled by Producer Gas Resulting from Leaf Waste Gasification

Leaf waste has the potential to be converted into energy because of its high availability both in the world and Indonesia. Gasification is a conversion technology that can be used to convert leaves into producer gas. This gas can be used for various applications, one of which is using it as fuel for gas turbines, including ultra-micro gas ones, which are among the most popular micro generators of electric power at the time. To minimize the risk of failure in the experiment and cost, simulation is used. To simulate the performance of gas turbines, the thermodynamic analysis tool called Cycle-Tempo is used. In this study, Cycle-Tempo was used for the zero-dimensional thermodynamic simulation of an ultra-micro gas turbine operated using producer gas as fuel. Our research contributions are the simulation of an ultra-micro gas turbine at a lower power output of about 1 kWe and the use of producer gas from leaf waste gasification as fuel in a gas turbine. The aim of the simulation is to determine the influence of air-fuel ratio on compressor power, turbine power, generator power, thermal efficiency, turbine inlet temperature and turbine outlet temperature. The simulation was carried out on condition that the fuel flow rate of 0.005 kg/s is constant, the maximum air flow rate is 0.02705 kg/s, and the air-fuel ratio is in the range of 1.55 to 5.41. The leaf waste gasification was simulated before, by using an equilibrium constant to get the composition of producer gas. The producer gas that was used as fuel had the following molar fractions: about 22.62% of CO, 18.98% of H2, 3.28% of CH4, 10.67% of CO2 and 44.4% of N2. The simulation results show that an increase in air-fuel ratio resulted in turbine power increase from 1.23 kW to 1.94 kW. The generator power, thermal efficiency, turbine inlet temperature and turbine outlet temperature decreased respectively from 0.89 kWe to 0.77 kWe; 3.17% to 2.76%; 782 °C to 379 °C and 705°C to 304 °C. The maximums of the generator power and thermal efficiency of 0.89 kWe and 3.17%, respectively, were obtained at the 1.55 air-fuel ratio. The generator power and thermal efficiency are 0.8 kWe and 2.88%, respectively, with the 4.64 air-fuel ratio or 200% excess air. The result of the simulation matches that of the experiment described in the literature.

Optimization of synthesis conditions for carboxymethyl cellulose from pineapple leaf waste using microwave-assisted heating and its application as a food thickener

Pineapple leaf waste, with its high cellulose content, can serve as alternative starting material for the production of carboxymethyl cellulose (CMC). In this study, synthesis conditions of CMC from pineapple leaves via the use of microwave heating were optimized. Box-Behnken design and response surface methodology were applied to schedule the experiments and to optimize the synthesis condition, respectively. Preparation of CMC was investigated by varying three factors, namely, sodium hydroxide (NaOH) concentration, monochloroacetic acid (MCA) dose, and etherification time. The process of carboxymethylation was optimized to produce CMC with high degree of substitution (DS). Optimal condition for CMC synthesis was noted to be 50% (w/v) NaOH solution, 8 g of MCA/g cellulose, and etherification time of 16 min; such optimal condition resulted in the maximum DS of 0.78. Synthesized CMC was utilized as a thickener for liquid foods (water, orange juice, milk, and mushroom cream soup) where 2% (w/v) as-synthesized CMC increased the viscosity of the foods and changed their characteristics from thin to nectar-like liquids.

Optimization of synthesis conditions for carboxymethyl cellulose from pineapple leaf waste using microwave-assisted heating and its application as a food thickener

Pineapple leaf waste, with its high cellulose content, can serve as alternative starting material for the production of carboxymethyl cellulose (CMC). In this study, synthesis conditions of CMC from pineapple leaves via the use of microwave heating were optimized. Box-Behnken design and response surface methodology were applied to schedule the experiments and to optimize the synthesis condition, respectively. Preparation of CMC was investigated by varying three factors, namely, sodium hydroxide (NaOH) concentration, monochloroacetic acid (MCA) dose, and etherification time. The process of carboxymethylation was optimized to produce CMC with high degree of substitution (DS). Optimal condition for CMC synthesis was noted to be 50% (w/v) NaOH solution, 8 g of MCA/g cellulose, and etherification time of 16 min; such optimal condition resulted in the maximum DS of 0.78. Synthesized CMC was utilized as a thickener for liquid foods (water, orange juice, milk, and mushroom cream soup) where 2% (w/v) as-synthesized CMC increased the viscosity of the foods and changed their characteristics from thin to nectar-like liquids.

MANUFACTURE OF LIGNINOLYTIC FUNGI INOCULUM Geotrichum sp. WITH SORGUM (Sorghum bicolor) MEDIA AND ITS EFFECT ON THE QUALITY OF BAMBOO LEAF COMPOST (Bambusa sp.)

Bamboo is a type of plant that grows in Indonesia. So far, people only use the stems and throw away the leaves. As a result, these abundant bamboo leaves become waste. Bamboo leaf waste contains lignin content of 19.8-26.6%, and becomes compost in the long term. The process of composting bamboo leaf litter can be accelerated using an activator such as the inoculum fungi Geotrichum sp. which is ligninolytic so that it can break down lignin complex compounds contained in bamboo leaf waste into simpler compounds. Sorghum contains about 6.5-7.9% fiber. The high fiber content in sorghum seeds can be used as a growth medium for fungal inoculum. The purpose of this study was to determine the effect of sorghum as an inoculum medium for Geotrichum sp. and the effect of inoculum on compost quality. This research was carried out in August - December 2019 at the Microbiology Laboratory of the Biology Department, Faculty of Mathematics and Natural Sciences, Unila. This study used a completely randomized design (CRD) method with 4 treatments, namely Control (Bamboo leaf litter), P1 (Bamboo leaf litter + 1% inoculum), P2 (Bamboo leaf litter + 1.5 % inoculum) and P3 (Bamboo leaf litter). + 2% inoculum) each treatment was repeated 3 times. The variables observed were the number of spores and spore viability using the Colony Forming Unit (CFU) calculation on inoculum and compost. Analysis of the content of C, N, P, and C/N ratio was carried out to determine the quality of the compost. Based on the research results, sorghum can be used as a growth medium for the ligninolytic fungi inoculum Geotrichum sp. with spore viability of 74.18% and the addition of 1.5% inoculum (P2) gave the best results on the quality of bamboo leaf compost (Bambusa sp.)

Date palm waste pyrolysis into biochar for carbon dioxide adsorption

Mitigation of CO2 is a very popular research currently, it is ultimately beneficial to find new ways that are sustainable, low cost and gas emission friendly. Therefore, with biochar’s characteristics and properties it has great potential to be used as a CO2 capture and storage media. The objectives of reducing palm waste by using the low-cost, sustainable method for reducing and storing CO2, characterize the DPL biochar through FTIR, XRD, SEM, EDX, and then evaluate the efficiency of the date palm leaf waste biochar in adsorbing CO2 through the Gas–Solid analyzer technology. Date palm leaf was set in pyrolysis process at 500°C peak at a 10°C per min rate for 5 h. The peaks of maximum intensity are approximately 1000 to 1500 cm −1; two peaks are approximately 1110 and 1600 cm-1 as the transition rises when the peaks are wider and shorter. Carbonyls, Alkenes, Alkynes, and others were found in feature groups, but the maximum area with O-H and C-H bonds and vibration picks is reduced and nearly non-existent. Biochar showed porous and heterogeneous structures with various magnifications, which give a greater amount of surface for adsorption. XRD analysis indicated that cellulose could progressively be decreased. The weighing of each component was 83.56% for Carbon, 12.43% for Oxygen, 1.12% for Potassium, 1.64% for Calcium, 0,83% for Phosphorus and 0.4% for Magnesium. The presence of these metals gives a strong CO2 attraction. The area value was found to have been approximately 3.117, reflecting the total CO2 obtained by the date palm leaf biochar. This shows that 300 gr of DPL biochar have been consumed by just one third of CO2. Date palm leaf of biochar’s shows a carbon dioxide adsorption efficiency of 20% and measured CO2 adsorption per g of biochar DPL of 0.017 g at 500 °C pyrolysis temperature and conditions set.

Enzymatic hydrolysis assisted with ligninocellulolytic enzymes from Trametes hirsuta produced by pineapple leaf waste bioconversion in solid-state fermentation

Enzymatic hydrolysis assisted with ligninocellulolytic enzymes from Trametes hirsuta produced by pineapple leaf waste bioconversion in solid-state fermentation

White poplar (Populus alba L.) leaf waste recovery and intercropping outcome on its polyphenols

The growing need for biomass recovery suggests forest waste leaf material for technological applications in a circular economy scenario. In this context, white poplar (Populus alba L.) foliar material was recovered in a forest site planted on a former agricultural land was identified in Tuscany (Italy), and intercropping eventually occurred was also valuated. In fact, the mixed plantation was characterized by tree different associations consisting of broad-leaf trees, including Populus alba L. intercropped with another valuable species (walnut, Juglans regia L.), and different nurse species (Italian alder, Alnus cordata (Loisel.); hazelnut, Corylus avellana L., Autumn olive, Elaeagnus umbellata (Thunb.)). Thus, Populus albaleaves were investigated for their lignin and phenol content, and for their anti-radical activity by (2,2-diphenyl-1-picrylhydrazyl) DPPH and [2, 2-azinobis (3-ethylbenzothiazoline-6-sulfonic acid)] ABTS assays. Furthermore, Populus alba extracts were profiled by liquid chromatography hyphenated to high-resolution tandem mass spectrometry (LC-HRMS/MS), in order to deepen into the intercropping influence on specialized metabolites’ content. In particular, it was observed that when Populus alba grows in presence of the nurse species Elaeagnus umbellata, a decrease in the aforementioned parameters was observed, as well as a negative impact on the polyphenol profile. Thus, our findings are in line with the observation that white poplar leaf residue has a high potential for achieving bioactive polyphenol compounds, and that an intercropped nurse species such as Alnus cordata could favourably augment flavonoids and chlorogenic acids to be used as multifunctional ingredients.

Removal of colorants from wastewater using biochar derived from leaf waste

Removal of colorants from wastewater using biochar derived from leaf waste

Morphology of Local Sweet Potatos (Ipomoea batatas) Leave Waste in Disused Limestone Mining Areas were Fertilized by Goat Litter Compost

The aim of this study was to determine the morphology of local sweet potato (Ipomoea batatas) leaf waste as forage in disused limestone mining areas were fertilized by goat compost litter. The method used in this research was an experimental method in the disused limestone mining area by using a factorial pattern with a completed randomized design, each treatment was repeated 3 times. Factor I was three types of local sweet potatoes, namely purple (U), white (P) and yellow (K) sweet potatoes, while the Factor II was the level of goat litter fertilization, namely k1: Level of goat litter fertilization 0.5 kg. / m2, k2: 1 kg / m2, k3: 1.5 kg / m2 and k4: 2 kg / m2. The morphology of sweet potato leaf waste was measuredby the number of leaf, the width of leaf, the length of leaf stalk and the weight of leaf . The results showed that the local type of sweet potato had significant different (P < 0.05) but the level of goat compost litter fertilization had no significant different (P > 0.05) on the morphology. Judging from the, it can be concluded that the waste of orange (O) sweet potato leaf with goat litter fertilization of at least 1 kg/m2 or 10 tons/ha has a high morphology, so that the amount of sweet potato leafwaste which was produced for the forage will be high.

Increasing the potential of Cajuput leaf waste as cattle feed through fermentation pretreatment

Waste of cajuput leaves (Melaleuca cajuputi Powell) has the potential to be used as an alternative cattle feed because it has a fairly high nutritional content. The nutritional content of cajuput leaf waste needs to be improved before being used as an alternative feed. The fermentation process can increase nutrient content in cajuput leaf waste and increase the digestibility of organic matter (OMD), dry matter digestibility (DMD), Ammonia (NH3), and Volatile Fatty Acid (VFA). This study aimed to determine the improvement of cajuput leaf waste nutrition with the help of yeast as well as the effect of fermented cajuput leaf waste along with a mixture of concentrates and field grass on digestibility, NH3, and VFA which were carried out in vitro test. The results showed the nutritional content of cajuput leaf waste fermented by yeast of Aspergillus chevalieri had the best value of protein 16.03%, fiber 16.92%, and fat 5.93%. The treatment R4 (50% cajuput leaf waste + 25% concentrate + 25% field grass) had the best digestibility (DMD=46.12%; DMO=32.08%), NH3 (8.37mM) and VFA (168.5mM) production.

A facile approach of micro-mesopores structure binder-free coin/monolith solid design activated carbon for electrode supercapacitor

A practical and effective approach is needed to obtain micro‑meso porous carbon in order to enhance electrode materials performance as energy storage applications. Therefore, this research aims at converting banana leaves biomass as a precursor into porous carbon via potassium hydroxide impregnation and physical activation at varying temperatures in the range of 700–900 °C. Most importantly, in this research, porous carbon is hierarchically prepared without complicated techniques such as hard/salt-templates, heteroatoms-doping, metal framework, or using graphene/metal oxides. Furthermore, the activated carbon is exhibited in the form of a binder-free coin/monolith solid design with the 3D porous structure clearly observed to determine the suitable micro/meso combinations. More importantly, activated carbon enhances the specific surface area of 623.491 m2g − 1 using a high temperature and mesoporosity value of 46%. Therefore, the symmetric supercapacitor produced a high specific capacitance of 245 F g − 1 in an acid electrolyte of 1 M H2SO4 and 211 F g − 1 in an alkaline electrolyte of 6 M KOH. The result showed that the hierarchical porous activated carbon based on banana leaf waste increases the specific energy by 34.67 Wh kg−1 with a specific power of 97.68 Wh kg−1. In conclusion, this utilized an effectively feasible approach to obtaining biomass-based hierarchical activated porous carbon as an electrode material for energy storage devices.

Ultrasound-Assisted Extraction of Lavender (Lavandula angustifolia Miller, Cultivar Rosa) Solid By-Products Remaining after the Distillation of the Essential Oil

FINNOVER is an EU Interreg-Alcotra project that aims to bring new perspectives to floriculture enterprises by recovering useful bioproducts from the waste produced during processing of several aromatic species. In this study, a new operation strategy to recover lavender (Lavandula angustifolia Mill.) solid by-products remaining after the extraction of the essential oil was developed. Pulsed ultrasound-assisted extraction was employed as a sustainable and eco-compatible technology to extract, in a very short time (10 min), this agricultural waste using a food-grade solvent (a mixture of ethanol/water). All the extracts obtained from both flower and leaf waste and flower-only residues, exhibit a promising total phenolic content (38–40 mg gallic acid/g of dry waste), radical scavenging activity (107–110 mg Trolox/g of dry waste) and total flavonoid content (0.11–0.13 mg quercetin/g of dry waste). Moreover, the chromatographic analysis of these extracts has shown that this overlooked agriculture waste can represent a valuable source of multifunctional compounds. Particularly, they exhibit a content of polyphenols and flavonoids up to 200 times higher than the corresponding leachate, and they are a valuable source of gentisic acid (1.4–13 mg/g dry waste) representing a new low-cost ingredient usable in different fields (i.e., cosmetic).

Synthesis of Chalcone Derivative from Clove Leaf Waste as a Natural Antioxidant

Synthesis of Chalcone Derivative from Clove Leaf Waste as a Natural Antioxidant

Analisis Laju Aliran Udara dan Laju Aliran Massa Bahan Bakar Terhadap Beban Pembakaran Sampah pada Incinerator Berbahan Bakar Limbah Oli Bekas

<em>The amount of household waste and B3 from oil machine waste have been increasing along with the increasing of polulation and the number of vehicles.</em> <em>This waste can be used as a source of energy. The aim of this research was to analize the</em> <em>air flow rate and mass flow rate of fuel in the incinerator oil machine waste using a burner furnace by conducting several variations of the experiment with variations in air velocity of 10,4 m/s (B1), 13,4 m/s (B2) and 14,3 m/s (B3) and fuel flow rate of 0,00408 l/s (A1) and 0,00838 l/s (A2) with fuel valve openings 1/2 and 1/4. The test results showed that the highest temperature was 1021,5<sup>0</sup>C in the A2-B3 experiment with 45 minutes and the lowest temperature was obtained in the A1-B1 experiment which was 840,5<sup>0</sup>C at the same time. In the incinerator test, the burning of dry plastic waste weighing 12 kg of waste burns out in 34 minutes with a temperature ratio for the burner furnace which is 780,9<sup>0</sup>C and the incinerator chamber space is 480,7<sup>0</sup>C and the combustion rate is 21,42 kg/hour. the yield of residual combustion is 9,32% and the incinerator combustion eficiency is 90,68% and for dry leaf waste weighing 8 kg the waste is burnt out in 20 minutes with a burner furnace temperature ratio of 712,3<sup>0</sup>C and incinerator chamber space of 443, 2<sup>0</sup>C and the combustion rate of 24,24 kg / hour and the yield of combustion residue is 96,94%.</em>

Preparation of Catechin Nanoemulsion from Oolong Tea Leaf Waste and Its Inhibition of Prostate Cancer Cells DU-145 and Tumors in Mice.

Anti-cancer activity of catechin nanoemulsions prepared from Oolong tea leaf waste was studied on prostate cancer cells DU-145 and DU-145-induced tumors in mice. Catechin nanoemulsions composed of lecithin, Tween-80 and water in an appropriate proportion was prepared with high stability, particle size of 11.3 nm, zeta potential of −67.2 mV and encapsulation efficiency of 83.4%. Catechin nanoemulsions were more effective than extracts in inhibiting DU-145 cell growth, with the IC50 being 13.52 and 214.6 μg/mL, respectively, after 48 h incubation. Furthermore, both catechin nanoemulsions and extracts could raise caspase-8, caspase-9 and caspase-3 activities for DU-145 cell apoptosis, arresting the cell cycle at S and G2/M phases. Compared to control, catechin nanoemulsion at 20 μg/mL and paclitaxel at 10 μg/mL were the most effective in reducing tumor volume by 41.3% and 52.5% and tumor weight by 77.5% and 90.6% in mice, respectively, through a decrease in EGF and VEGF levels in serum.