Levels of polychlorinated dioxins and dibenzofurans in commercial detergents and related products

Chemosphere ◽  
1990 ◽  
Vol 21 (1-2) ◽  
pp. 43-50 ◽  
Author(s):  
Christoffer Rappe ◽  
Rolf Andersson ◽  
Karin Lundström ◽  
Karin Wiberg
Keyword(s):  
Commercial Detergents

Potential of a Novel Thermotolerant Lipase Bacillus stearothermophilus nr22 (Lip.nr-22) as Additive in High Temperature Operated-Neutral pH Liquid Detergent

2017 ◽  
Vol 735 ◽  
pp. 136-142 ◽  
Author(s):  
Nik Raikhan Nik Him ◽  
Nurul Shafika Azmi
Keyword(s):  
High Temperature ◽  
Bacillus Stearothermophilus ◽  
Laundry Detergent ◽  
Detergent Formulation ◽  
Time Interval ◽  
Oil Removal ◽  
Optimum Conditions ◽  
Detergent Concentration ◽  
Neutral Ph ◽  
Commercial Detergents

Enzyme-added detergent must have the capability to operate at high temperature to support the enzyme proteins to clean soiled-fabrics at optimum conditions. Lipase from Bacillus stearothermophilus nr22 (Lip.nr-22) has improved the oil removal from soiled-cotton fabric by 38.8-51.4% in 4 types of local commercial detergents. The later was the oil removal from an unrevealed detergent. The optimum conditions were 108U/ml Lip.nr-22 in 0.1M, pH 7.0, washing temperature and washing time interval as 80°C and 40 min, respectively; shaking wash at 300 rpm and percentage of detergent concentration as 0.5. Lip.nr-22 is a very potential enzyme in high temperature-neutral pH operated laundry detergent formulations. It has exhibited a very excellent thermostability at 80°C, was very stable with surfactants, commercial detergents as well as with oxidizing agents (H2O2, NaBO3H2O and NaClO). Lip.nr-22 as additive in detergent formulation is a promise for better detergent formulation.

scholarly journals Anionic surfactants and commercial detergents decrease tight junction barrier integrity in human keratinocytes

2016 ◽  
Vol 138 (3) ◽  
pp. 890-893.e9 ◽  
Author(s):  
Mu Xian ◽  
Paulina Wawrzyniak ◽  
Beate Rückert ◽  
Su Duan ◽  
Yifan Meng ◽  
...  
Keyword(s):  
Tight Junction ◽  
Anionic Surfactants ◽  
Human Keratinocytes ◽  
Barrier Integrity ◽  
Commercial Detergents

scholarly journals A Study of the Decontamination Effect of Commercial Detergents on the Skin

2003 ◽  
Vol 38 (2) ◽  
pp. 140-147
Author(s):  
Koji TAKASAKI ◽  
Kenjiro MIYABE ◽  
Yuichi IZUMI ◽  
Hideo YASUNAKA
Keyword(s):  
Commercial Detergents

scholarly journals Optimization, Purification, and Starch Stain Wash Application of Two Newα-Amylases Extracted from Leaves and Stems ofPergularia tomentosa

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Imen Lahmar ◽  
Hanen El Abed ◽  
Bassem Khemakhem ◽  
Hafedh Belghith ◽  
Ferjani Ben Abdallah ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Enzyme Activity ◽  
Specific Activity ◽  
Amylase Activity ◽  
Detergent Industry ◽  
Sepharose Column ◽  
Stems And Leaves ◽  
Commercial Detergents ◽  
Starch Substrate

A continuous research is attempted to fulfil the highest industrial demands of natural amylases presenting special properties. Newα-amylases extracted from stems and leaves ofPergularia tomentosa, which is widespread and growing spontaneously in Tunisia, were studied by the means of their activities optimization and purification. Some similarities were recorded for the two identified enzymes: (i) the highest amylase activity showed a promoted thermal stability at 50°C; (ii) the starch substrate at 1% enhanced the enzyme activity; (iii) the twoα-amylases seem to be calcium-independent; (iv) Zn2+, Cu2+, and Ag2+were considered as important inhibitors of the enzyme activity. Following the increased gradient of elution on Mono Q-Sepharose column, an increase in the specific activity of 11.82-fold and 10.92-fold was recorded, respectively, for leaves and stems with the presence of different peaks on the purification profiles.Pergulariaamylases activities were stable and compatible with the tested commercial detergents. The combination of plant amylase and detergent allowed us to enhance the wash performance with an increase of 35.24 and 42.56%, respectively, for stems and leaves amylases. Characterized amylases were reported to have a promoted potential for their implication notably in detergent industry as well as biotechnological sector.

Effect of Sublethal Concentrations of Commercial Detergents on the Protein Content of Selective Freshwater Fishes

2021 ◽  
Vol 40a (1) ◽  
pp. 127-139
Author(s):  
Logeswari ◽  
Kandhasamy Kaliyammal ◽  
Abdul Majeeth Facika ◽  
Moses Rajasekara Pandian ◽  
Gani Sharmila Banu
Keyword(s):  
Protein Content ◽  
Freshwater Fishes ◽  
Commercial Detergents ◽  
Sublethal Concentrations

scholarly journals STUDI POTENSI LIPASE Alcaligenes faecalis UNTUK APLIKASI BIODETERJEN

2016 ◽  
Vol 3 (2) ◽  
pp. 66
Author(s):  
Ika Rahmatul Layly ◽  
Nita Oktavia Wiguna
Keyword(s):  
Olive Oil ◽  
Culture Medium ◽  
Performance Test ◽  
Economic Value ◽  
Performance Testing ◽  
Alcaligenes Faecalis ◽  
Luria Bertani ◽  
Stability Testing ◽  
Commercial Detergents ◽  
Hydrolysis Of

In detergent industry, enzymes are used enormously in terms of quantity and economic value. Lipase catalyzes the hydrolysis of triglycerides into diglycerides and monoglycerides by releasing fatty acids. Lipase is produced by bacteria, fungi, and yeasts. This study aims to determine the potential of Alcaligenes faecalis lipase  for its application  as biodetergen, through stability testing of its lipase activity against detergent components by exposing the enzyme to the commercial detergents, as well as performance testing through washing. Alcaligenes faecalis lipase was produced using Luria Bertani (LB) culture medium supplemented with 1% olive oil inducer. Production is carried out for 24 hours, and the enzyme was harvested at the 18th hour. The harvested enzyme was tested for their stability after being exposed to commercial detergents at a concentration of 1-5%. Results showed that the exposure to the detergents decreased the enzyme activity to 22, 38, 48, 68 and 90%. Performance test showed that the olive oil impurity removal from the fabric was 29%.Keywords: Alcaligenes faecalis Lipase, biodetergent, lipase activities, washing test AbstrakPada industri detergen penggunaan enzim sangatlah besar baik secara jumlah maupun nilai ekonomi. Lipase mengkatalis hidrolisis trigliserida menjadi digliserida dan monogliserida dengan membebaskan asam lemak. Lipase dihasilkan oleh bakteri, jamur, dan yeast. Penelitian ini bertujuan untuk mengetahui potensi lipase Alcaligenes faecalis untuk aplikasi biodeterjen, melalui uji stabilitas aktivitas lipase terhadap komponen deterjen dengan memaparkan terhadap deterjen komersial serta uji kinerja melalui washing test. Lipase Alcaligenes faecalis diproduksi menggunakan media Luria Bertani (LB) dengan penambahan induser minyak zaitun 1%. Produksi dilakukan selama 24 jam dengan waktu pemanenan enzim pada jam ke-18. Enzim yang sudah dipanen diuji stabilitasnya setelah dipapar dengan deterjen komersial pada konsentrasi 1-5%. Berdasarkan hasil pengujian aktivitas setelah dipapar terlihat penurunan aktivitas berturut-turut sebesar 22, 38, 48, 68 dan 90%. Hasil uji kinerja menunjukkan bahwa noda minyak zaitun yang hilang dari kain sebesar 29%.Kata kunci: Lipase Alcaligenes faecalis, biodeterjen, aktivitas lipase, washing test

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