Evaluating effects of sewage sludge and household compost on soil physical, chemical and microbiological properties

Lakum (Cayratia trifolia (L.) Domin) contains a lot of anthocyanin. Anthocyanin in Lakum fruit has a high stability if stored at low temperatures, acidic conditions, and without light. The acidic product such as yogurt can provide an optimum condition for anthocyanin stability and antioxidant activity. The purpose of this study was to optimize yogurt formulation fortified by lakum fruit extract as an antioxidant according to the requirements of the Indonesian National Standard (SNI). Lakum fruit extract was formulated in yogurt with various concentrations at 0%, 5%, 7.5% and 10%. Evaluations were carried out including tests of physical, chemical and microbiological properties and anthocyanin test and antioxidant of yogurt. The results showed that the yogurt formula fortified lakum fruit extract at 7.5% concentration resulted highest anthocyanin stability and antioxidant activity that fulfilled SNI requirements and the preferred level of respondents' preference with anthocyanin levels of 53.35±1.04 mg/L, antioxidant activity 69.15±0.24%, t90 7.97 days, total of lactic acid bacteria (LAB) 48.2x107 colony/gram, fat 3.72±0.03%, pH 3.87±0.03, total acid 0.83±0.06%, viscosity 639.07±2.06 cP, protein of 4.90±0.11%, hedonic test, 6.88 (like), and organoleptic purple (5), the distinctive aroma of lakum fruit (4.95), sour taste (4.85), fine texture (4.9) and slightly liquid viscosity (4.85).

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Physical, Chemical and Microbiological Properties of Laban Rayeb

Alexandria Journal of Veterinary Sciences ◽

10.5455/ajvs.230003 ◽

2016 ◽

Vol 51 (2) ◽

pp. 269

Author(s):

Abbas Ahmed ◽

Amr Amer ◽

Mohamed Sakr

Keyword(s):

Physical Chemical ◽

Microbiological Properties

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Physico-chemical and microbiological properties of plant wastes treated with sewage sludge

Agricultural Wastes ◽

10.1016/0141-4607(81)90013-5 ◽

1981 ◽

Vol 3 (4) ◽

pp. 267-275 ◽

Cited By ~ 2

Author(s):

P. Rajasekaran ◽

M. Sampathkumar

Keyword(s):

Sewage Sludge ◽

Physico Chemical ◽

Microbiological Properties

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PRODUÇÃO E CARACTERIZAÇÃO DE BIOCARVÃO A PARTIR DE BIOSSÓLIDOS ARMAZENADOS EM BAG’s GEOTÊXTEIS NO MUNICÍPIO DE RANCHARIA -SP

Colloquium Exactarum ◽

10.5747/ce.2019.v11.n4.e303 ◽

2019 ◽

Vol 11 (4) ◽

pp. 142-155

Author(s):

Beatriz Regina de Ângelo ◽

Rafaela Pelegrini Vital ◽

Marcelo Rodrigo Alves ◽

Jaqueline Oliveira da Silva ◽

Melissa Arantes Pinto ◽

...

Keyword(s):

Organic Matter ◽

Sewage Sludge ◽

Chemical Properties ◽

Physical And Chemical Properties ◽

Pyrolysis Process ◽

Physical Chemical ◽

Physical And Chemical ◽

Stable Material ◽

And Chemical Properties

Sewage sludge refers to a nutrient-rich by-product and organic matter from treatment plants and has become a challenge for many research segments to find a rational and sustainable destination for this material. In this context, the carbonization of biomass (by the pyrolysis process) results in biochar, characterized by a very stable material with specific physical and chemical properties and can represent a very important tool for this challenge. Thus, the objective of the present work was to transform, bypyrolysis process, small portions of the biosolid generated in Rancharia ETE into biochar. In addition, both the biosolid and the generated bicarbons were subjected to physical, chemical and structural analyzes in order to proceed with their respective characterization. From the analysis, it was found that the treatment submitted to temperature of 550°C as the best option for possible applications.Keywords:biosolid; pyrolysis; biochar.

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Characterization of Sewage Sludge for Quality Assessment and Its Safe Utilization in Agriculture

Current Journal of Applied Science and Technology ◽

10.9734/cjast/2021/v40i2531511 ◽

2021 ◽

pp. 28-35

Author(s):

Surendra Singh Jatav ◽

Satish Kumar Singh ◽

Abhik Patra ◽

Hanuman Singh Jatav ◽

Kiran Kumar Mohapatra ◽

...

Keyword(s):

Heavy Metals ◽

Sewage Sludge ◽

Plant Growth ◽

Environmental Concern ◽

Biochemical Properties ◽

Agricultural Field ◽

Soil Environment ◽

Toxic Heavy Metals ◽

Soil Application ◽

Physical Chemical

The current investigation was undertaken to explore the physico-biochemical properties of sewage sludge (SS) and its feasible application in agricultural field as an organic manure as source of nutrients with to solve the environmental concern. Sewage sludge samples were collected from sewage treatment plants (STP), Bhagwanpur, Varanasi, Uttar Pradesh, India and passed through a 2 mm sieve for further analysis of different physical, chemical and biological parameters. The treated sewage sludge consists of both major and micro nutrients along with a good amount of organic matter. Application of this sewage sludge has the ability to enhance the physical, chemical and biological properties of soil which is beneficial for plant growth and development sustainable soil environment. However, it also contains some amount of toxic heavy metals and organic pollutants that can adversely affect soil environment depending on the origin source of sewage sludge, and treatment process of sewage sludge. Furthermore, the toxic elements go through the food chain due to its uptake and accumulation by crops posing a possible threat to human health. Sewage sludge application in soil offers essential nutrients particularly for plant growth, maintains the organic carbon in soil and decreases environmental concern with economic factors that restrict landfill or incineration disposal of sewage sludge. However, a careful assessment of the characteristics of sewage sludge is required prior to its soil application to improve the soil health without causing environmental hazard. The SS analyzed in the present study had heavy metals content but was within permissible limits as resulted its suitable for soil application as source of nutrients.

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Physical, chemical, microbiological properties and shelf life kinetic of spray-dried cantaloupe juice powder during storage

LWT ◽

10.1016/j.lwt.2020.110597 ◽

2021 ◽

Vol 140 ◽

pp. 110597

Author(s):

Suet Li Tan ◽

Rabiha Sulaiman ◽

Yaya Rukayadi ◽

Nurul Shazini Ramli

Keyword(s):

Shelf Life ◽

Physical Chemical ◽

Spray Dried ◽

Microbiological Properties

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The bacterial diversity of sun-dried spanish mackerel in Dalian and application of Lactobacillus plantarum X23 as a bio-preservative

Journal of Food Protection ◽

10.4315/jfp-21-057 ◽

2021 ◽

Author(s):

Lu Feng ◽

Ying Li ◽

Yanfeng Tuo ◽

Changlu Ma

Keyword(s):

Acid Value ◽

The Sun ◽

Microbial Composition ◽

Spanish Mackerel ◽

Physical Chemical ◽

Rdna Sequencing ◽

Sensory Score ◽

Low Salt ◽

Dominant Bacteria ◽

Microbiological Properties

Sun-dried spanish mackerel is a common food in Dalian and made by adding salt and sun drying, which has special physical, chemical and microbiological properties. In this study, the physicochemical properties and microbial composition of the commercial available sun-dried spanish mackerel in Dalian were assessed, and some Lactobacillus strains were screened as bio-preservative for sun-dried spanish mackerel preparation. The results showed that the TVBN content in the traditional sun-dried spanish mackerel samples from Dalian was within 30 mg/100g, the histamine content was 7-17 mg/kg, and the dominant bacteria at the genus level were Lactobacillus , Psychrobacter and Ralstonia . A strain with bio-preservative potential was isolated from sun-dried spanish mackerel sample, identified as L. plantarum species by 16S rDNA sequencing, and assigned as L. plantarum X23. Fresh spanish mackerel flesh was treated with 16% brine and L. plantarum X23 at a dose of 10 7 CFU/mL, and then sun-dried. The sun-dried spanish mackerel flesh treated with 16% brine and L. plantarum X23 showed the decreased histamine and acid value, the increased free amino acids contents, and a higher sensory score, compared with the sun-dried spanish mackerel without L. plantarum X23 treatment. In conclusion, the sun-dried spanish mackerel purchased from the supermarkets in Dalian were edible safe, and L. plantarum X23 can significantly reduce the content of histamine and putrescine in the self-made low-salt sun-dried spanish mackerel, and has the potential to be as bio-preservative for sun-dried spanish mackerel preparation.

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