Application of lean manufacturing technology in a milk manufacturing company

This work presents the application of lean management principle in the area of waste elimination in a powder milk plant of a production company. The existing manufacturing procedure for the company’s plant was evaluated, and a lean manufacturing technique was developed for the plant. To achieve this, a time series analysis was carried out on the econometric data obtained, and a future forecast predicting losses and usage was predicted based on the practised manufacturing procedures. The econo­metric linear transfer function technique applied to the actual usage and actual loss data obtained filtered the waste in the production process and generated forecast values for actual loss and usage. This revealed that there had been poor manufacturing practices in the factory. The findings from this research can be used as a guide to managers on wastage control in a production system.

Evaluation of the Bacteriological Quality of Milk Sold in Nnewi, Nigeria

Introduction: Contamination of milk products can result to severe intestinal and extra-intestinal diseases in man. This study was aimed at evaluating the bacteriological quality of various milk products sold in Nnewi. Materials and Methods: Using the Cluster sampling technique, 30 milk samples (5 pasteurized skimmed milk, 5 powdered infant milk formulas, 5 powdered milk, 5 unsweetened evaporated milk, 5 branded soya milk and 5 unbranded soya milk) were purchased randomly from different shops and hawkers around Nnewi. Sample processing was done by serially diluting samples in sterile 1% peptone water before plating onto Mannitol Salt Agar, Violet Red Bile Glucose Agar, Blood Agar, MacConkey and Cysteine Lactose Electrolyte Deficient (CLED) agar using the Pour-plate technique. Bacterial count and identification were done using standard bacteriological as well as molecular techniques. The molecular techniques used were Polymerase Chain Reaction, Sanger Sequencing and BLAST analysis on the NCBI BLAST online. Results: This showed that 15 (50%) out of 30 milk samples were contaminated to varying degrees with bacteria. Nine (9) samples showed the presence of Escherichia coli with 32.14% of all the milk samples tested. E. coli was present in skimmed milk (20%), evaporated milk (20%), branded soyamilk (40%) and unbranded soyamilk (100%) but was not isolated from Infant formula and Powder milk. Klebsiella spp. showed the second highest prevalence (28.57%) and was present in evaporated milk (20%), branded soyamilk (40%), unbranded soyamilk (100%). Salmonella spp. (3.57%) was isolated from unbranded soyamilk,Enterobacter spp. (14.29%) was isolated from powder milk and in unbranded soyamilk samples, Staphylococcus aureus(3.57%) and Staphylococcus epidermidis (3.57%) were isolated only in unbranded soyamilk, Macrococcus caseolyticus (3.57%) was isolated from unbranded soyamilk. Novel species such as Aquitalea magnusonii (3.57%), Alishewanella fetalis (3.57%) and Lysinibacillus macroides (3.57%) were identified by molecular analysis to be present in infant formula, evaporated milk and unbranded soyamilk respectively. Conclusion: This research revealed that the bacteriological quality of some milk and milk products sold in Nnewi is not acceptable especially the unbranded soyamilk samples that showed gross contamination.

Added Value Analysis of Intermediate and Final Cocoa Products: Case Study in a Cocoa Producing Unit in Jember, East Java

Cocoa is one of the important commodities that significantly contribute to Indonesian economy. Moreover, millions farmers depend on this commodityas their main source of income. However, the low quality of dried cocoa beans produced by Indonesian smallholder cocoa farmers has led the low farm-gateprice. Therefore, efforts for increasing the cocoa income are required. Hilirisasi (down streeming) program has been implemented by the Government of Indonesia (GoI), including in cocoa commodity in order to increase the added value ofcocoa. There are various downstream products, including intermediate and final products that can be produced. The intermediate products include paste/liquor,cocoa butter, and cocoa powder, meanwhile the final products, such as 3 in 1 cocoa powder, milk chocolate bars and dark chocolate bars. Research on addedvalue of intermediate and final cocoa products specially in small size producing units is still limited, whereas this research is required to support the nationaleconomy and smallholder cocoa farmers. Therefore, this research aims to understand the added value of producing intermediate and final cocoa products at asmall sized enterprises of cocoa processing unit based in Jember, East Java. This research was conducted in March to June 2020 by conducting observation, documentation and interview for understanding the production activities of intermediateproducts (cocoa paste/liquor, cocoa butter and cocoa powder) and final products (3 in 1 milk powder, milk chocolate bar and dark chocolate bar). The researchresults show that producing intermediate and final products resulted in medium to high added value and profitable for the producing unit. Producing cocoa paste/liquor generated the highest profit among the intermediate cocoa products, meanwhile on final cocoa products, processing 3 in 1 cocoa powder provided thehighest profit. In order to increase the national and community economy, the support of GoI to small and medium enterprise (SMEs) or farmer groups for processing the downstream cocoa products is required. Cocoa is one of the important commodities that significantly contributeto Indonesian economy. Moreover, millions farmers depend on this commodity as their main source of income. However, the low quality of dried cocoa beansproduced by Indonesian smallholder cocoa farmers has led the low farm-gate price. Therefore, efforts for increasing the cocoa income are required. Hilirisasi(down streeming) program has been implemented by the Government of Indonesia (GoI), including in cocoa commodity in order to increase the added value ofcocoa. There are various downstream products, including intermediate and final products that can be produced. The intermediate products include paste/liquor,cocoa butter, and cocoa powder, meanwhile the final products, such as 3 in 1 cocoa powder, milk chocolate bars and dark chocolate bars. Research on addedvalue of intermediate and final cocoa products specially in small size producing units is still limited, whereas this research is required to support the nationaleconomy and smallholder cocoa farmers. Therefore, this research aims to understand the added value of producing intermediate and final cocoa products at asmall sized enterprises of cocoa processing unit based in Jember, East Java. This research was conducted in March to June 2020 by conducting observation, documentation and interview for understanding the production activities of intermediateproducts (cocoa paste/liquor, cocoa butter and cocoa powder) and final products (3 in 1 milk powder, milk chocolate bar and dark chocolate bar). The researchresults show that producing intermediate and final products resulted in medium to high added value and profitable for the producing unit. Producing cocoa paste/liquor generated the highest profit among the intermediate cocoa products, meanwhile on final cocoa products, processing 3 in 1 cocoa powder provided thehighest profit. In order to increase the national and community economy, the support of GoI to small and medium enterprise (SMEs) or farmer groups for processing the downstream cocoa products is required.

Evaluation of borhani prepared from whole milk, skim milk and full cream powdered milk curd

The present research work was carried out to evaluate the qualities of borhani prepared by curd using whole milk, skim milk and full cream powder milk. In this purposes, three types of borhani were prepared, these were grouped as; A: Borhani prepared from whole milk curd, B: Borhani prepared from skim milk curd and C: Borhani prepared from full cream powder milk curd. The prepared borhani samples were subjected to organoleptic, chemical and microbiological qualities. After performed physical examination, for sample A it was found that there was no significant difference in color and appearance (17.67±0.33) but there was significant difference (p<0.05) in smell and taste (47.33±0.33), body and consistency (26.33±0.33) and total physical scores (91.33±0.88) of the three borhani samples. Chemical analysis showed that for group A; there were significant differences with others (p<0.01) in contents (%) of fat (2.95±0.33), total solids (TS) (18.15±0.16), acidity (0.80±0.01), pH (4.25±0.02), moisture (81.85±0.16), CHO (10.50±0.93) and (p<0.05) in contents (%) of ash (1.82±0.02), protein (2.88±0.02). The result of chemical parameter showed that borhani prepared from whole milk (sample A) was best among the samples. However, there were no significant differences in coliform count and yeast and mold count but there were significant differences (p<0.01) in total viable count (60.67±2.33). Cost analysis showed that samples B and C was cheap than sample A. It can be concluded that even costly; the nutritive value and the consumer preference of borhani from whole milk was better than the others. Asian Australas. J. Food Saf. Secur. 2020, 4 (2), 58-65

Survivability of Salmonella and Escherichia coli O157:H7 Pathogens and Food Safety Concerns on Commercial Powder Milk Products

Milk and dairy products are susceptible to the incidence of foodborne illnesses by numerous pathogens, including Listeria monocytogenes, Salmonella spp., Escherichia coli, enteropathogenic Campylobacter jejuni, Yersinia enterocolitica, Cronobacter (Enterobacter sakazakii) and Staphylococcus aureus. Annually Salmonella infections cause approximately 93.8 million cases of gastroenteritis and 155,000 deaths worldwide. Including meat and poultry, dairy products are the most commonly contaminated foods by Salmonella. Studies show that Salmonella, Escherichia coli O157:H7 and Listeria monocytogenes are among the top 5 pathogens causing hospitalization and life-threatening foodborne illnesses. The U.S. Centers for Disease Control and Prevention (CDC) estimated that annually around 1.2 million foodborne illnesses with more than 23,000 hospitalizations, 450 deaths and 130 outbreaks were attributed to Salmonella infection in the U.S. The Salmonella enteric in skim milk powder survived at three months storage, with water activity as low as 0.33. With respect to Escherichia coli O157:H7, it is capable of causing disease at a low dosage, ranging from 5–50 cells. Viable cells of Escherichia coli O157:H7 reportedly survive in infant formula powder for one year at 5 °C. The survivability of Escherichia coli in powder milk was significantly reduced with the synergistic effects of storage time and temperature. The U.S. Dairy Export Council recommends that milk powder should be stored in a cool and dry place, at a temperature not to exceed 27 °C, and a relative humidity not to exceed 65%. Reports have recommended that milk powder products need to be stored in light, oxygen, and moisture-proof containers. In this article, the survival of the major foodborne pathogens including Salmonella and Escherichia coli O157:H7 in powdered milk products from common dairy species such as cow and goats are reviewed.

Production of Peanut Milk and Its Functional, Physiochemical, Nutritional and Sensory Characteristics

This study was aimed to investigate the functional properties of peanut seeds, and physicochemical, nutritional and sensory analysis of processed peanut milk. Standard methods were used in this research to determine the functional properties and proximate composition, while minerals were determined by a flame photometer and colorimeter. Firstly, the functional proprieties of the whole and defatted kernel of peanut seeds were studied, and the best results were found in the defatted sample. Peanut milk samples were divided into four samples depends on the percentage of powder milk addition (3, 6, 9 and 12%) as well as the control sample without addition. The pH, total soluble solids, viscosity, and density of samples were (6.2-6.5, 6-16%, 3-8 mPa/s, and 1.01-1.05 g/cm3, respectively), increased with the increasing of milk powder. About the proximate analysis, the highest values of ash, protein, fat, total carbohydrates (0.8, 6.3, 6.3, and 7.5%, respectively) were found in the sample of 12% powder milk. Sodium, potassium, and calcium in the samples (3, 6, 9 and 12%) were found in the range 38-58, 55-89, and 10-18 mg/100 g, respectively. Sensory evaluation results revealed great acceptance for peanut milk made with 3% powder milk addition, while we're not found a significant difference in the color and taste of all samples and control. This study proved the possibility of using Sudanese peanut as a milk substitute which was found to be a good source of nutrients. This study suggested using peanut milk as a milk substitute, and in yogurt manufacture, future work should aim at studying optimum storage conditions and stable packaging requirements.