scholarly journals A First Attempt to Produce Proteins from Insects by Means of a Circular Economy

Animals ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 278 ◽  
Author(s):  
Silvia Cappellozza ◽  
Maria Giovanna Leonardi ◽  
Sara Savoldelli ◽  
Domenico Carminati ◽  
Anna Rizzolo ◽  
...  
Keyword(s):  
Larval Growth ◽  
Waste Reduction ◽  
Standard Diet ◽  
Fish Feed ◽  
Insect Rearing ◽  
System Establishment ◽  
Microbiological Analyses ◽  
Processing Steps ◽  
Reduction Index

The worldwide growing consumption of proteins to feed humans and animals has drawn a considerable amount of attention to insect rearing. Insects reared on organic wastes and used as feed for monogastric animals can reduce the environmental impact and increase the sustainability of meat/fish production. In this study, we designed an environmentally closed loop for food supply in which fruit and vegetable waste from markets became rearing substrate for Hermetia illucens (BSF— black soldier fly). A vegetable and fruit-based substrate was compared to a standard diet for Diptera in terms of larval growth, waste reduction index, and overall substrate degradation. Morphological analysis of insect organs was carried out to obtain indications about insect health. Processing steps such as drying and oil extraction from BSF were investigated. Nutritional and microbiological analyses confirmed the good quality of insects and meal. The meal was then used to produce fish feed and its suitability to this purpose was assessed using trout. Earthworms were grown on leftovers of BSF rearing in comparison to a standard substrate. Chemical analyses of vermicompost were performed. The present research demonstrates that insects can be used to reduce organic waste, increasing at the same time the sustainability of aquaculture and creating interesting by-products through the linked bio-system establishment.

scholarly journals PENGARUH RASIO UMPAN, VARIASI JENIS SAMPAH ORGANIK, DAN KUALITAS KOMPOS HASIL BIOKONVERSI MENGGUNAKAN LARVA BLACK SOLDIER FLY (Hermetia Illucens)

2020 ◽  
Vol 7 (2) ◽  
pp. 59
Author(s):  
Haryandi Haryandi ◽  
Syauqy Nur Izzy
Keyword(s):  
Feed Rate ◽  
Organic Waste ◽  
Organic Fertilizer ◽  
Waste Reduction ◽  
Organic Fertilizers ◽  
Substrate Consumption ◽  
Black Soldier Fly ◽  
Rate Type ◽  
Reduction Index

One technology that can degrade organic waste is bioconversion using Black Soldier Fly (BSF) or Hermenetia illucens which content high protein source. This research studied the effect of BSF production withg varying feed rate, type of waste, and the quality of compost that produced compare with the Indonesia government requirement. The experiment was conducted at PT. Biomagg Sinergi Internasional, an organic waste processing company in West Java. The results of this study indicated the highest BSF biomass value in the treatment of catering with feed rate of 200 mg/larvae/ day, the highest substrate consumption value was on fermentation waste with feed rate 100 mg/ larvae /day is 72.05%, the highest survival rate was the catering waste with feed rate of 100mg/larvae / day, and the highest value of waste reduction index was the fermentation waste with 100 mg / larvae / day feed rate is 4.80%. The quality of compost produced by bioconversion conducted by PT. BSI has met the quality standards of organic fertilizers based on Permentan No. 70 / Permentan / SR.140 / 10/2011 concerning organic fertilizer. 

Chất lượng nước ở Bắc Bình dựa trên các kết quả phân tích hóa học và vi sinh

2018 ◽  
Vol 28 (4) ◽  
pp. 484-497
Author(s):  
Phan Thị Kim Văn ◽  
Bùi Trần Vượng
Keyword(s):  
Quality Of Water ◽  
Microbiological Analyses

The quality of water in Bac Binh according to chemical and microbiological analyses

scholarly journals Valorisation of Organic Waste By-Products Using Black Soldier Fly (Hermetia illucens) as a Bio-Convertor

2021 ◽  
Vol 13 (15) ◽  
pp. 8345
Author(s):  
Kieran Magee ◽  
Joe Halstead ◽  
Richard Small ◽  
Iain Young
Keyword(s):  
Food Waste ◽  
Fish Feed ◽  
Black Soldier Fly ◽  
Hermetia Illucens ◽  
High Quality Protein ◽  
The Face ◽  
Beet Pulp ◽  
By Products ◽  
Hermetia Illucens Larvae

One third of food produced globally is wasted. Disposal of this waste is costly and is an example of poor resource management in the face of elevated environmental concerns and increasing food demand. Providing this waste as feedstock for black soldier fly (Hermetia illucens) larvae (BSFL) has the potential for bio-conversion and valorisation by production of useful feed materials and fertilisers. We raised BSFL under optimal conditions (28 °C and 70% relative humidity) on seven UK pre-consumer food waste-stream materials: fish trimmings, sugar-beet pulp, bakery waste, fruit and vegetable waste, cheese waste, fish feed waste and brewer’s grains and yeast. The nutritional quality of the resulting BSFL meals and frass fertiliser were then analysed. In all cases, the volume of waste was reduced (37–79%) and meals containing high quality protein and lipid sources (44.1 ± 4.57% and 35.4 ± 4.12%, respectively) and frass with an NPK of 4.9-2.6-1.7 were produced. This shows the potential value of BSFL as a bio-convertor for the effective management of food waste.

KOH-ETCH Related Defects on Processed Silicon Wafers

1992 ◽  
Vol 259 ◽  
Author(s):  
Laurent E. Kassel
Keyword(s):  
Thermal Treatment ◽  
Epitaxial Growth ◽  
Silicon Wafers ◽  
Processing Steps ◽  
Crystallographic Orientations

ABSTRACTKOH, an anisotropic etchant of monocrystalline Si, may cause roughness and defects whose shapes are related to crystallographic orientations. This paper studies the effect of processing steps on the formation of geometric etch defects. Implantation, thermal treatment, epitaxial growth or photoresist were not the source of such defects. In the scope of this study, only unwanted damage caused geometric etch defects. This makes the observation of the wafer after KOH etch a good indicator of the quality of previous steps.

scholarly journals Assessment of the microbiological quality of popular food items on sale in secondary school canteens of Mauritius

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Dayawatee Goburdhun ◽  
Mahima D. Beeharry ◽  
Keshnee Reega ◽  
Arvind Ruggoo ◽  
Hudaa Neetoo
Keyword(s):  
Secondary School ◽  
Microbiological Quality ◽  
Viable Count ◽  
Food Type ◽  
Salmonella Spp ◽  
E Coli ◽  
High Level ◽  
Microbiological Analyses ◽  
Composite Samples

This study was carried out to assess the microbiological status of three hot meals served in eight selected school canteens of Mauritius, with two schools randomly selected from each of the four school zones of the island. Three individual samples of farata, panini, or fried noodles were collected at each school during two independent visits. The three individual samples of each food type collected during each visit were then pooled before being subjected to microbiological analyses. A total of 48 composite samples were analyzed. The parameters tested were Total Viable Count (TVC), Escherichia coli, Salmonella spp., Clostridium perfringens, Staphylococcus aureus, and Listeria spp. The microbiological analyses revealed that paninis were deemed as generally acceptable with TVC falling in the range of 3.0-5.7 Log CFU/g and undetectable levels of S. aureus and E. coli. In contrast, fried noodles and faratas harboured a moderately high level of TVC (4.4-6.7 Log CFU/g) and objectionably high levels S. aureus (3.1 to 5.0 Log CFU/g) and E. coli (3.1-5.1 Log CFU/g) for seven out of the eight schools.

scholarly journals A study on processing conditions of fermented acerola juice

2018 ◽  
Vol 17 (05) ◽  
pp. 123-136
Author(s):  
Thanh T. Le
Keyword(s):  
Vitamin C ◽  
Sugar Concentration ◽  
Enzyme Treatment ◽  
Fermented Product ◽  
Sensory Score ◽  
Commercial Yeast ◽  
Processing Steps ◽  
Fermented Juice ◽  
Microbiological Properties

This study investigated some key processing steps of fermented acerola juice, including variety, maturity, enzyme treatment, sugar concentration and fermentation and pasteurization conditions. One or two-factor experiments were randomly designed to determine the most suitable processing variables based on the investigated parameters, including the content of vitamin C, sensory quality and physicochemical properties of the resultant juice. The results showed that the Brazil variety (Malpiphia emarginata D.C) had highest vitamin C content (1567.9 mg/100 g), followed by sour variety (Malpiphia glabra L.) (882.9 mg/100 g) and sweet variety (Malpiphia punicifolia L.) (630.4 mg/100 g). However, according to sensory evaluation results, the sour acerola juice after fermentation had the highest overall score, indicating to be the most suitable for processing. The fermented juice of sour acerola variety at 100% maturity had the highest sensory score and vitamin C content compared to other levels of maturity. In order to enhance the clarity of acerola juice, the addition of 0.15% pectinase enzyme (Pectinex ultra SPL, Novozymes) was the most effective compared to 0.05 and 0.1% (w/w) enzyme concentrations. The fermentation at 15oC in 48 hours with 22% sugar concentration and 0.1% commercial yeast (Saf-instant, France) obtained the highest quality fermented juice. The fermented product was pasteurized at 80oC for 10 minutes to stop fermentation process as well as to retain the color and taste of the fermented juice. The good quality of the fermented acerola juice, in terms of physicochemical, sensory and microbiological properties could be maintained for at least 6 months.

scholarly journals Microbial quality of linseed and fibre hemp plants during growing and harvest seasons

2008 ◽  
Vol 13 (4) ◽  
pp. 327 ◽  
Author(s):  
M. KOIVULA ◽  
H-R. KYMÄLÄINEN ◽  
L. VANNE
Keyword(s):  
Cannabis Sativa ◽  
Raw Materials ◽  
Microbiological Quality ◽  
Growing Season ◽  
Plate Count ◽  
Production Chain ◽  
Growing Seasons ◽  
Linum Usitatissimum L ◽  
Microbiological Analyses

Linseed (Linum usitatissimum L.) and fi bre hemp (Cannabis sativa L.) can be used as raw materials in various applications. In this study, microbiological quality and meteorological measurements were made during the growing seasons and harvesting periods of 2001 and 2002. The microbiological analyses were carried out with Hygicult® TPC and Y&F dipslides, and with a surface spreading method using Plate Count and Potato Dextrose agars. During the growing season of 2001 the conditions were mostly humid, whereas the growing season of 2002 was rather dry and warmer than that of 2001. The lack of water during the growing season of 2002 affected the growth of the plants. In the case of both hemp and fl ax, the mould and bacterial contents (cfu gdw-1) increased markedly at the end of the growing season of 2001. During the growing season of 2002 the increase in mould and bacterial contents was noticeable but more constant throughout the whole growing season. At the end of the growing seasons, the mould and bacteria contents were higher in 2001 than in 2002. The genera of moulds identifi ed included Cladosporium, Fusarium, Penicillium, Mucor and Alternaria. The microbiological safety should be controlled during the whole production chain, beginning with the cultivation and harvesting periods.;

scholarly journals Hygienic Conditions and Quality of Dishes Cooked and Sold by Women Traders in the Town of Korhogo

2020 ◽  
pp. 1-10
Author(s):  
Karamoko Detto ◽  
Yoro Dezay Thierry ◽  
Moroh Jean-Luc Aboya ◽  
Koffi Alex Joel ◽  
Djè Koffi Marcellin
Keyword(s):  
Point Of View ◽  
Ishikawa Diagram ◽  
Hygiene Practices ◽  
The One ◽  
Cleaning And Disinfection ◽  
The Town ◽  
Microbiological Analyses ◽  
Good Hygiene ◽  
Hygienic Conditions

The aim of this study is to evaluate the hygienic quality of the dishes cooked and sold by the women traders in the town of Korhogo. The study was carried out with 45 restaurants in the town of Korhogo. It consisted on the one hand, a survey based on the Ishikawa diagram in order to assess the hygienic conditions, and on the other hand of microbiological analyses of the ready-to-serve meals. A total of 90 samples were taken, including 2 dishes per restaurant, respectively consisting of one hot and one cold dish. Generally, results showed that hygienic conditions were unsatisfactory based on the utilized guidelines. From a microbiological point of view, the meal samples were 75.2% satisfactory, 7.6% acceptable and 17.2% unsatisfactory. In view of these results, it appears essential to improve hygiene conditions by greater involvement of the official services involved in training these traders and monitoring compliance with good hygiene practices and the establishment of a program of cleaning and disinfection of premises and equipment.

By-products of insect rearing: insect residues as biofertilizers.

2021 ◽  
pp. 60-71
Author(s):  
Adin Y. Bloukounon-Goubalan ◽  
Aliou Saïdou ◽  
Victor A. Clottey ◽  
Kalifa Coulibaly ◽  
Norbert Erokotan ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Soil Health ◽  
Health Improvement ◽  
Inorganic Fertilizers ◽  
Insect Rearing ◽  
True Value ◽  
Potential Benefits ◽  
Organic And Inorganic Fertilizers ◽  
By Products

Abstract The chapter highlights the potential benefits associated with the use of insect-rearing residues as biofertilizers while exploring the mechanisms by which chitin in insect frass might control common crop pathogens. The potential benefits for soil fertility derived from the use of insect frass, comparison of quality of insect-derived biofertilizers and common organic and inorganic fertilizers and insect frass and plant health improvement are discussed. While more research is essential to understand the true value of insect-derived biofertilizers for plant and soil health, preliminary findings suggest there are significant opportunities for beneficial impacts in agriculture and horticulture to be realized.

scholarly journals Microbiological Quality of Attiéké (Steamed Cassava Semolina) Sold in Côte d’Ivoire

2020 ◽  
Vol 8 (2) ◽  
pp. 14
Author(s):  
KPATA-KONAN Nazo Edith ◽  
YAO N’Zué Benjamin ◽  
COULIBALY Kalpy Julien ◽  
KONATÉ Ibrahim
Keyword(s):  
Storage Time ◽  
Microbiological Quality ◽  
Faecal Coliforms ◽  
Microbiological Characteristics ◽  
The One ◽  
The City ◽  
And Storage ◽  
The Town ◽  
Microbiological Analyses

This article looked at the quantity and storage time of attiéké produced and sold in the town of Daloa. It also examines the microbiological characteristics of attiéké-femme and attiéké-garba from this locality during storage. The study was carried out on the one hand through a field survey carried out on the producers and sellers. On the other hand, a sample was taken from 10 sellers of attiéké-garba and 10 sellers of attiéké-woman. The study found that the women producers sell 87% of their production in the city of Daloa and export 13%. In addition, attiéké can be kept for 2 days at the producers and beyond 2 days at the sellers before their stock runs out. Therefore, a weekly production of more than 200 kg for the majority of the producers is observed. Microbiological analyses showed high levels of germs (MAG: 6.106 CFU/g; Yeasts and moulds: 2.7.106 CFU/g) for attiéké-women and (2.106 CFU/g of GAM and 1.6.103 CFU/g of Yeasts and moulds) for attiéké-garba. Total coliforms and faecal coliforms were only found in attiéké-women. No salmonella was observed. In view of the results, it should be noted that female attiéké is the most contaminated type of attiéké.

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