Chocolate Bars Research Articles

Physicochemical, microbiological, and sensory properties of probiotic chocolate bar Dad-13 made from cocoa beans fermented with Lactiplantibacillus plantarum HL-15 during storage

Good-quality chocolate can be produced only from good-quality cocoa beans. The cocoa bean quality can be improved using indigenous Lactiplantibacillus plantarum HL-15 as a starter culture in fermentation. The functionality of chocolate can be enhanced by the addition of probiotic L. plantarum Dad-13. This research aimed to evaluate the physicochemical, microbiological, and sensory characteristics of the probiotic chocolate bar Dad 13 made from fermented cocoa beans L. plantarum HL-15 during storage at different temperatures. The research was conducted in three stages. The first stage was the cocoa bean fermentation with and without L. plantarum HL-15, the second stage was probiotic chocolate bar Dad-13 production, and the third stage was the storage of probiotic chocolate bar Dad-13 at temperatures of 4 and 26°C. This study found that adding L. plantarum HL-15 to the fermentation could produce good-quality cocoa beans, prevent the growth of fungi presented by the pH and Aw of cocoa beans, and form a probiotic chocolate bar during storage. Storage at 4°C maintained the viability of L. plantarum Dad-13 and minimized fat breakdown. The organoleptic attributes of the probiotic chocolate bar Dad-13 during storage at 4 and 26°C were not significantly different (p > 0.05).

A new method based on extraction induced by emulsion breaking for determination of Co and Ni in chocolate bars by graphite furnace atomic absorption spectrometry

This paper describes a new experimental configuration of extraction induced by emulsion breaking method to extract and determine Ni and Co in chocolate bars by graphite furnace atomic absorption spectrometry. At optimized conditions, the sample (0.08 g) was mixed with 4 mL of extractant solution (4% m/v Triton X-100 and 10% v/v HNO3) in a plastic syringe to form a solid-oil-water emulsion. Then, emulsion breaking was assisted by membrane filtration. The total extraction procedure took approximately 1 min, in opposition to 25 (centrifugation) and 50 min (heating). Extraction yields ranged from 94.8 to 114.3% for Co and from 85.9 to 108.4% for Ni. The limits of detection and quantification were, respectively, 24.73 and 82.45 μg Kg−1 for Co and 49.05 and 163.5 μg Kg−1 for Ni. Recoveries ranged from 92.1 (Ni) to 105.4% (Co).

Assessing the cadmium content of cacao crops in Arauca, Colombia

The district of Arauca is the second-largest producer of cacao in Colombia. However, despite its quality, it faces issues for export due to levels of cadmium (Cd) higher than the regulatory thresholds. A central question is how it may impact agricultural performance in the presence of Cd in cacao and chocolates. This study quantified Cd in cacao plantations from Arauca. Thus, 180 farms were assessed in the municipalities of Arauquita, Fortul, Saravena, and Tame. Five sample types (soil, irrigation channel sediment, soil litter, cacao seeds, and chocolates) were assessed for Cd. As a technological innovation, the new MXRF technology was used for Cd in chocolates. The sequence of Cd content was soil litter > chocolate > soils > cacao seeds > irrigation-channel sediment. A gradient north–south of Cd content in soil was observed, where highest content was found in farms near the Arauca River, and lower farther away. In irrigation channel sediment, Cd levels averaged 0.07 mg kg−1. The Cd content in cacao seeds was 0.78 mg kg−1 on average. Cd content in chocolates was above the threshold (1.10 mg kg−1 on average, including several cacao mass percentages). These artisanal chocolate bars produced by single farms were near the limit of Cd set by the European Union (up to 0.8 mg kg−1). Therefore, mixing beans from different farms could reduce their Cd content. The present study underscores the complexity of Cd distribution, emphasizing the importance of integrating soil, crop, and landscape features in managing and mitigating Cd levels in cacao.

Steaming Maintains Fatty Acids, Antioxidants, and Proximate Content in Snack Bar Products from Cocoa Beans.

Chocolate products on the market are generally in the form of chocolate bars as snacks made from cocoa powder. Fat and powder are separated first through a pressing process to obtain the cocoa powder. Cocoa powder loses most of its fat content during processing. Therefore, the study aimed to determine the effect of steaming time on the cocoa bean content of fatty acids, free fatty acids, proximate levels, and antioxidant activity of snack bar products made from steamed cocoa beans. Seven steaming time intervals for cocoa beans were studied. The results showed that a longer steaming time affects the fatty acids, saturated fatty acids, antioxidants, and proximate in cocoa beans. Steaming time treatment at 45 minutes increased oleic acid, palmitic acid, and antioxidant activity. In addition, reducing free fatty acids represents a quality improvement that meets international Codex Alimentarius standards, offering a competitive advantage in the market. The food industry can adopt this steaming technique to develop snack bars and new products that are healthier and more sustainable by using steaming as an effective processing method in maintaining and increasing the nutritional value of products.

Improving the quality of pendawa chocolate bar with the addition of palm oil and coconut oil

Chocolate bars are a food that is in demand by almost all age groups, both men and women. Aside from being a healthy snack, chocolate products are included in the refreshing plant, which can stimulate the central nervous system. It creates a happy dopamine effect for those who consume it. The demand for chocolate bar products has increased every year. As one of the world’s largest cocoa-producing and supplying countries, Indonesia must evaluate the quality of its cocoa beans. This research uses fermented cocoa beans, which are then processed into cocoa butter cocoa paste, which is used to manufacture pendawa chocolate bars. Other ingredients include mustard oil, coconut oil, cocoa butter, cocoa paste, powdered sugar, powdered milk, baking soda, vanilla, and lecithin, which are added to the chocolate bar formulation. Color, total dissolved solids, hardness, and melting time of chocolate bars were analyzed. The formulation of ingredients with palm oil was better for improving the quality of the chocolate bars produced based on the level of hardness, total dissolved solids, and melting time. The best treatment in this research was the F5 formulation, namely the addition of coconut oil in making Pendawa chocolate bars with a melting time of close to 24 hours at room temperature.

Analisis Value Added Olahan Cokelat Batangan Pada CV. Rapoviaka Simple Di Kota Palu

CV. Rapoviaka Simple is one of the MSMEs in the chocolate processing industry that processes semi-finished products into finished products in the form of chocolate bars with various flavors. This shows an effort to increase the added value in the chocolate processing process. This study aims to determine and analyze the amount of added value obtained from processing semi-finished chocolate (block paste) into chocolate bars at CV. Rapoviaka Simple. Data collection techniques in this study through observation and interviews. The data analysis method used is using the hayami method. Based on the results of the study, it shows that processed chocolate bars at CV Rapoviaka Simple provide high added value and profits for producers, with an input of 4kg /day, an output of 4kg/ day is obtained. The amount of added value obtained is Rp 157,188/kg with a value-added ratio of 49.9%, while the profit obtained is Rp 157,188/kg. The return to the owner of the production factor of labor and the contribution of other inputs is 22.72% and 4.73%, so that the company's profit is 72.53%.

Samuelson, Mortensen, and Melitz walk into a chocolate bar: A tale of jobs, inter‐generational conflict, and international trade

AbstractWe bring together three prominent literatures to show how jobs create an intergenerational externality. Employment acts as an asset, allowing current generations to borrow from future generations. The competitive equilibrium is not Pareto efficient, and the policies preferred by the current generation differ from the policies that maximize the welfare of future generations. We illustrate with an application to international trade.

Derived Environmental Impacts of Organic Fairtrade Cocoa (Peru) Compared to Its Conventional Equivalent (Ivory Coast) through Life-Cycle Assessment in the Basque Country

There is a global need to create an environmentally low-impact and socially fair international food and agriculture system. Specifically, in the case of chocolate, since it is difficult to produce locally in consumer countries, the socio-economic impact and benefits of its production have long been unfairly distributed. This research analyses the differences between the global environmental impacts of Fairtrade-certified and organically produced cocoa (from Peru), sold in the form of a chocolate bar purchased in the Basque Country (Europe), and the respective average conventional product made with non-organic cocoa beans (from Ivory Coast). Life-cycle assessment (LCA) methodology was used to calculate five impact categories, while ReCiPe 2016 Midpoint Hierarchist was used to analyse the global warming potential (GWP), terrestrial ecotoxicity (TE), and environmental footprint (ENVF, for land use); AWARE was used to measure the water footprint (WF); and cumulative energy demand (CED) assessed energy footprint (EF). The selected functional unit (FU) is 1 kg of final chocolate bar (72% cocoa), extrapolating the characteristics of a 150 g bar. The system boundaries take into account a cradle-to-gate LCA covering the following phases: the production of ingredients, the processing of cocoa paste, transportation and packaging, the manufacture of the chocolate, and its final retail distribution. The results show that certified Organic Agriculture and Fairtrade (OA&FT) chocolate had an average global warming potential (GWP) of 3.37 kg CO2-eq per kilogram, 57.3% lower than Conventional Agriculture (CA)-based chocolate, with the greatest reduction associated with the production of ingredients, at −71.8%. The OA&FT chocolate studied had an 87.4% lower impact in the category of terrestrial ecotoxicity (TE) than that of the CA-based chocolate, yielding 13.7 and 108.6 kg 1,4-DCB per kilogram, respectively. The greatest reduction in the TE impact category also occurred for the OA&FT chocolate in the ingredient production phase, at 93%. Reductions in energy footprint (EF) and water footprint (WF) were also observed in the OA&FT product (21% and 5%). In contrast, although OA&FT processing drastically reduced the associated environmental loads, an increase in packaging and transport phase impacts was observed in the GWP and TE categories (95% and 107%, respectively). Similarly, an increase of 18.7% was observed in the land use footprint for the OA&FT chocolate. The greater need for cropland is compensated by the reduction of 449.02 kg 1,4-DCB·person−1 year−1 in the TE category. This research shows that replacing the current consumption of CA cocoa with OA&FT cocoa has the potential to reduce the GWP by 21.95 kg CO2-eq·person−1·year−1, reducing the current Basque average emission range of 8.4 tCO2-eq·year−1 by 0.26%. As a future subject to study, it was also found that the impact of long-distance maritime transportation and packaging could still have the potential to be reduced, it currently being the cause of up to 11% of the GWP from OA&FT cocoa.

The Effect Of Adding Hydrogenated Coconut Oil And The Time Of Adding Cocoa Powder On The Physical And Organoleptic Chocolate Bar

Chocolate bars are one of the processed cocoa products that are much loved by Indonesians. The main ingredient used to manufacture chocolate bars is cocoa butter. However, the relatively high price of cocoa butter causes chocolate bar production costs to be high. Hydrogenated coconut oil as an alternative to reduce the use of cocoa butter was investigated to reduce production costs. On the other hand, aroma can be reduced due to the conching process where during the conching process some volatile compounds evaporate. Therefore, it will be compared between the addition of cocoa powder at the beginning and at the end of the conching process which can give the sharpest aroma to the final chocolate bar product. The result showed that the addition of hydrogenated coconut oil at the level of 50% of the total use of cocoa butter gave the best physical properties of chocolate bar which resulted in a higher melting point with less fat blooming. The organoleptic results showed a significant difference between the controls, the time of adding cocoa powder at the beginning and at the end, where adding cocoa powder at the beginning gave a higher value for the parameters of taste and texture, but less value for the parameters of color and aroma.

Analysis of Production Planning of Cocoa Products Using Workload Analysis and Operation Scheduling

The fluctuating demand levels each period is a significant challenge in the company’s production. Production scheduling stands out as a crucial process in the production system. PT XYZ, a privately-owned company specializing in cocoa plantations in Indonesia, faced problem in production planning, leading to delays in chocolate product output. This study delved into the workload experienced by the production operator and the production schedule using the workload analysis and the Campbell Dudek Smith (CDS). Data were collected through observations and interviews. The results revealed that the total workload for the current eight production operators in each production room was 988.1%. The existing production schedule was not optimal as indicated with an excessively high makespan of 170. Implementing the CDS method reduced the makespan to 151, enhancing performance by 19% and saving 12% of time. The findings suggest that introducing two additional workers could alleviate the overall workload for production operators. In addition, the proposed production schedule prioritizes chocolate powder, followed by chocolate butter, chocolate liquid, and chocolate bars. The implications of this research extend to potential benefits for the company, including improved work quality, enhanced production efficiency, and an overall enhancement of the company’s performance.

Analyzing larger sample sets with rapid methods: Incomplete-block designs with free-sorting and free-linking tasks

As rapid, holistic methods for similarity and description—such as sorting and projective mapping—have grown in popularity, a limiting factor is the number of samples that can be presented to subjects: more than 25 food samples decreases the quality and stability of results. While incomplete-block designs could address this, their use has not been developed for these holistic methods. In this paper we present an empirical investigation into the use of incomplete-block designs with free sorting and the newer free linking. We compare these two methods because while their results are comparable, the cognitive tasks are different, and thus their suitability for incomplete-block designs may differ. We evaluated the effects of incomplete-block designs in two studies. In Study 1, 20 subjects evaluated 6/10 chocolate bars by free linking in an incomplete-block design, with each subject completing 2 blocks; results were compared to a complete-block evaluation of the 10 bars by free sorting and free linking. In Study 2, a total of 90 subjects evaluated 62 terms from a chocolate flavor-wheel in 3 conditions (between subjects): free sorting with complete blocks (N = 30, all 62 terms) and free sorting (N = 30) or free linking (N = 30) with 3 incomplete blocks of 16/62 terms. We introduce a novel method to evaluate stability for the incomplete-block designs that we call “pairwise simulation.” From Study 1, we find that pairwise simulation provides adequate stability estimates and that, with sufficient pairwise cooccurrences, free linking with incomplete blocks produces results that are comparable to free sorting or linking with complete blocks. From Study 2, we demonstrate that free linking with incomplete blocks can produce high quality results from a large sample set, maintaining the increased discrimination capacity that marks free linking in general, and that with incomplete blocks, free linking is likely to be more stable than free sorting. This research demonstrates that incomplete-block designs can be used with free linking, and also provides a new, effective method through pairwise simulation for evaluating stability with incomplete-block designs, which cannot be resampled using standard bootstrapping approaches.

Pengembangan Aneka Produk Hilir dari Biji Kakao untuk Meningkatkan Pengetahuan dan Pendapatan Masyarakat

The lack of understanding of cocoa farmers regarding cocoa bean processing technology and the absence of process standards for producing quality dry cocoa beans and producing downstream products are problems that need attention. Efforts to overcome the problems faced by residents of Kreb Paloh Village and Capa Paloh Village, Suyo Paloh Village and Siron Village, Paloh Village, Padang Tiji District, Pidie Regency, through PKM activities it is hoped that the community will be able to process cocoa beans which have been directly sold to collectors after harvest. become a product that has high economic value so that it can increase people's income. Methods for carrying out activities include outreach, field observations, training in processing raw material selection, fermentation of cocoa beans in wooden boxes measuring 32 cm long, 32 cm wide and 42 cm high, with a capacity of 40 kg. Wet cocoa beans in each box. Drying and processing of cocoa beans is carried out under direct sunlight to reduce the water content below 7.5%. The production of quality cocoa powder is obtained by roasting and grinding it using a flouring machine. Cocoa powder is used to produce various products ranging from chocolate bars, chocolate cake, chocolate drinks, chocolate candy and chocolate jam. Monitoring and evaluation is used to monitor and evaluate the continued implementation of hygienic and quality cocoa bean fermentation by fostered partners on an ongoing basis after the operation is complete. 95% of target partners have the capacity to produce hygienic and high quality cocoa beans. 90% of target partners can trade various products produced from cocoa beans.

Chocolate toxicosis in pets

Chocolate ingestion is very common in pets, particularly dogs, but has also been reported in other animals including cats and rabbits. Most cases occur around Christmas and Easter, when large amounts of chocolate are often present in the home in the form of chocolate bars, snacks, confectionery, Easter eggs and chocolate figurines. Chocolate-covered raisins, nuts and coffee beans present an additional toxicological hazard in dogs. The type of chocolate is defined in law by the percentage of cocoa solids, with dark (plain) chocolate containing more than milk chocolate. The main toxic component of chocolate is theobromine, a methylxanthine, although caffeine, another methylxanthine, is also present. These cause central nervous system stimulation with cardiac and respiratory hyperactivity. Signs include gastrointestinal effects, excitability, hyperactivity, tachycardia, tremors, hypertension and hyperthermia. Signs of toxicosis generally occur within a few hours of ingestion. The mainstays of treatment are decontamination and supportive care with rehydration, control of central nervous system stimulation and arrhythmias as required. Most pets recover fully, and death is uncommon; however, prognosis is more guarded in pets with seizures or arrhythmias.

Fermentasi Kakao di Kelompok Tani Plea Puli Desa Bloro Kabupaten Sikka

Bloro Village is one of the villages in Nita District, Sikka Regency, East Nusa Tenggara Province with the majority of the population working as farmers. The leading commodity in this village is Cocoa. The Plea Puli Farmers Group is one of the farmer groups involved in cocoa cultivation, including the seeding and processing of the results. The Plea Puli Farmers Group has a chocolate industrial house with production products in the form of cocoa powder and chocolate bars. To get a quality chocolate bar and cocoa powder products, you need to pay attention to post-harvest handling, namely cocoa fermentation. Because it is at this stage that determines the precursor to the distinctive taste of cocoa. However, the fact is that most farmers do not ferment properly. This program aims to provide education to farmers about post-harvest handling, especially cocoa fermentation. Through this activity, it is hoped that farmers can understand that to obtain good quality cocoa beans, the thing that must be considered is post-harvest handling, especially cocoa fermentation. This program begins with a discussion with several members of the Plea Puli Farmers Group and the preparation of an activity plan with the farmer group. Followed by the preparation stage, namely preparing tools and materials. At the implementation stage, activities began with socialisation about cocoa fermentation, then continued with harvesting, fruit sorting, ripening, fruit splitting, wet bean sorting, fermentation, and drying activities with the Plea Puli Farmers Group.

Penyuluhan Pemanfaatan Lemak Kakao untuk Pembuatan Sabun Padat

Cocoa butter is a by-product in the production process of chocolate bars and chocolate powder. In Bloro Village, Nita District, Sikka Regency, cocoa butter is produced in quite significant quantities, considering that Bloro Village is one of the largest cocoa producers in Sikka. The "Plea Puli" farming group in the village manages a production house known as "Plea Puli Chocolate House." The main objective of this research is to use cocoa butter produced from the chocolate production process as a basic ingredient for making bar soap. Soap is a chemical compound made through the reaction between fat or oil and alkali (usually sodium hydroxide). This soap has emulsifying properties that allow it to bind with dirt and oil on the skin, which can then be washed away. Therefore, the cocoa butter produced from the chocolate production process can be an absorbing soap-making base material. By using these tallow cocoa stalks to make soap, we can create added value for chocolate by-products, which have been considered waste. Apart from that, this can also make a real contribution to local economic development by helping to increase the income of cocoa farmers and encouraging the growth of the Plea Puli Farmers Group.

Cocoa effects on blood pressure, endothelial function, and inflammation: a systematic review

Hypertension has affected 1,13 billion people worldwide and is one of the main risk factors for cardiovascular disease, which has a high mortality rate. The aim of the study was to review the effect of cocoa on systolic and diastolic blood pressure in hypertensive patients, and its alterations in endothelial function and inflammation. We searched PubMed, Scopus, Science Direct, Lilacs and MedLine databases in August 2018. Inclusion criteria were limited to hypertensive individuals, cardiovascular diseases, intervention and randomized clinical studies; published since 2000 and in English, Spanish and Portuguese languages. A total of 433 articles were found in the search, which 13 met the inclusion criteria. The trials had a sample of 19 to 122 participants. The cocoa was offeredas chocolate bars and cocoa beverage. Chocolate bars doses ranged from 6 g to 100 g/ day and cocoa powder doses ranged from 5 g to 31 g/ day. Intervention ranged from 2 to 18 weeks. The results observed revealed a significant blood pressure-reducing effect of cocoa, an increase in flow-mediated dilation in the evaluation of endothelial function, and no changes in antioxidant and anti-inflammatory capacity were observed after intervention. The conclusion suggests that cocoa has a blood pressure lowering effect, but new studies are still required with hypertensive individuals so that their mechanisms are better evaluates and their efficacy proven.

Threat or treat: Exposure assessment and risk characterisation of chemical contaminants in soft drinks and chocolate bars in various Polish population age groups.

In the frame of the European Food Risk Assessment (EU-FORA) fellowship programme, two studies on chemical contaminants in food matrices were carried out in Warsaw, Poland, at the Department of Food Safety and Chemical Analysis, Institute of Agricultural and Food Biotechnology. The first study addressed health concerns about the dietary exposure to bisphenol A (BPA) contamination due to consumption of soft drink by Polish population. BPA is an organic additive used in the production of epoxy resins and polycarbonate plastics and because of this it is used in the internal coating of cans and in plastic bottle production. Depending on several factors, BPA can migrate from these materials to the soft drink and so, it can be ingested by consumers causing hormonal and reproductive disorders. To estimate the Polish population exposure to BPA, several soft drinks belonging to different brands were purchased from a supermarket in the city of Warsaw and analysed. The result of the analysis highlight that mean BPA exposure in the Polish population exceeds the tolerable daily intake proposed by the EFSA scientific opinion, raising health concerns. On the other hand, the second study, focused on cadmium exposure due to chocolate consumption by Polish population, did not raise any health concern. Cadmium is a heavy metal that naturally occurs in its inorganic form in the environment and its presence in chocolate derives only from the cocoa beans and not from contamination during processing. Its accumulation in the human body can create several adverse effects, including renal dysfunction and failure. To estimate the Polish population exposure to cadmium, several chocolate bars were purchased from a supermarket in the city of Warsaw and analysed. The results of the analysis show that cadmium exposure in the Polish population does not exceed the tolerable weekly intake proposed by the EFSA scientific opinion.

Nutritional Value, Physical Properties, and Sensory Quality of Sugar-Free Cereal Bars Fortified with Grape and Apple Pomace

Cereal bars are so-called convenience foods. Consumers value these products as a healthier alternative to traditional chocolate bars. Since these snacks usually contain added dried fruit, they have high potential for the utilisation of waste materials from the fruit industry. The study aimed to determine the effect of fortification of cereal bars with grape and apple pomace on their nutritional value, physical properties, and sensory quality. The control recipe was modified by replacing 10 or 20 g of sultanas with apple or grape pomace. The fortification with these food by-products resulted in a significant increase in the moisture content of the products, an increase in soluble fibre content, and a decrease in the level of antioxidant compounds. The strength of the cereal bars supplemented with grape and apple pomace increased. In addition, the panellists noticed a colour difference compared to the unmodified product (2 < ΔE < 5). A positive effect of the addition of the fruit pomace on the visual characteristics of the cereal bars was also observed. No changes were observed in the tastiness of the product. On the other hand, the aroma of the modified products and the texture of the bars containing the apple residue were less acceptable. In conclusion, cereal bars containing grape pomace and up to 10 g of apple pomace are characterised by high soluble dietary fibre content and desirable sensory and mechanical properties and are therefore recommended for industrial production.

Daily, Weekly and Monthly Variation in Lunch Time Calories

Introduction & BackgroundDespite the level of attention that healthy and unhealthy eating receive from academic research, policymakers and the wider public, objective data on food consumption is limited. This is because studies of individual eating patterns using food diaries are subject to underreporting, particularly by people who are overweight. For example, the UK population is estimated to consume between 30% to 50% more calories than they report in surveys. New data sources such as office canteen ordering systems and individual records of supermarket transactions recorded through supermarket loyalty or bonus cards offer larger and potentially more robust data on real world individual eating behaviours.
 Objectives & ApproachWe used 2,831,403 machine-recorded ‘meal deal’ transactions from 205,781 individuals over the course of one year from one of the UK’s largest suppliers of lunch time foods to investigate whether there is a relationship between patterns of choice and higher calorie consumption. A meal deal comprises three items; a main (e.g., a sandwich or a salad), a snack (e.g., crisps, fruit or a chocolate bar) and a drink (e.g., a smoothie or a bottle of water). In contrast to diary studies or aggregate transactional data from supermarkets, our dataset included “meal deal’ purchase which is highly likely to be made by an individual for their own consumption or soon afterwards.
 Relevance to Digital FootprintsLunch time food consumption can reflect the overall diet the individual is exposed to, helping to understand population level patterns of people’s food choices through a type of digital footprints data - shopping history records.
 ResultsControlling for gender, general index of variety in the choice of lunch food items, income and education, we found that individuals who vary in their calorie consumption most across the time of day, day of the week, and month of the year are the individuals who consume the greatest number of calories overall. These time sensitivity effects are large, together explaining a substantial amount of variance in calorie consumption. Time sensitivity effects are strongly correlated across all three time scales suggesting they measure a stable underlying trait.
 Conclusions & ImplicationsIndividuals vary calorific composition of their lunch over time of the day, day of the week and month of the year by 100 calories per meal between highest and lowest in sensitivity which is about 9% of the recommended amount of lunchtime calories. Those whose consumption varies the most with time consume the most calories, independently of income and gender. The variation in calories at all three time scales demonstrates the properties of an individual disposition. These findings can be used to understand why and when people make unhealthy food choices.

The effect addition of palm oil and coconut oil on the proximate value of pendawa chocolate, North Sumatra

Deli Serdang is one of the cocoa-producing regions in North Sumatera. Its high productivity value and lack of processing system cause cocoa beans to be sold dry directly. Chocolate bars are one type of chocolate produced by the Pendawa Farmers Group. Pendawa chocolate bar products are already favored by many people because they have a delicious taste, attractive color, excellent source of antioxidants, and provided health beneficial effect. In this study, cocoa beans were fermented and processed into cocoa powder so that they could be used as the main raw material in the making of chocolate bars. Other materials used in the processing of pendawa chocolate bars are palm oil, coconut oil, powdered sugar, cocoa fat, milk powder, cocoa paste, vanilla, baking soda, and lecithin. The resulting chocolate were analyzed to determine the value of proximate content. The research result showed that the mixing ratio of the chocolate-making ingredients using palm oil and coconut oil can maintain the nutritional content of pendawa chocolate products as well as form a better texture.