Hand Rejuvenation Using Intense Pulsed Light

2008 ◽  
Vol 12 (3) ◽  
pp. 107-113 ◽  
Author(s):  
Alberto Goldman ◽  
Clarissa Prati ◽  
Flávia Rossato
Keyword(s):  
Data Analysis ◽  
Informed Consent ◽  
Intense Pulsed Light ◽  
Pulsed Light ◽  
Skin Texture ◽  
Patient Questionnaires ◽  
Self Assessments ◽  
Skin Quality ◽  
Hand Rejuvenation ◽  
Safe Treatment Option

Background: The aging of the hands is typically characterized by wrinkles, skin thinning, and solar lentigines. The search for effective treatments has led to the use of laser and intense pulsed light (IPL) technologies. Objective: To assess the effectiveness of an IPL device for the improvement of dyspigmentation and overall skin quality on the dorsa of the hands. Methods: Twenty-three patients with sun damage and solar lentigines on the dorsal hands were treated with four IPL sessions at 3- to 4-week intervals. Prior to treatment, photographs were taken and informed consent was obtained. Pre- and post-treatment photography and investigator clinical assessment and patient questionnaires were collected for data analysis. Results: After four treatment sessions, good to excellent results in the improvement in solar lentigines and skin quality were assessed by investigators in 100% of the cases and in 86.94% (20 of 23 subjects) by patient self-assessments. No significant side effects were observed. Conclusion: IPL is an effective and safe treatment option to improve solar lentigines and skin texture for hand rejuvenation.

scholarly journals Decontamination of Powdery Foods Using an Intense Pulsed Light (IPL) Device for Practical Application

2021 ◽  
Vol 11 (4) ◽  
pp. 1518
Author(s):  
Hee-Jeong Hwang ◽  
So-Yoon Yee ◽  
Myong-Soo Chung
Keyword(s):  
Total Energy ◽  
Water Activity ◽  
Treatment Time ◽  
Sesame Seed ◽  
Pilot Scale ◽  
Black Pepper ◽  
Intense Pulsed Light ◽  
Pulsed Light ◽  
Energy Fluence ◽  
Color Changes

Controlling microbial problems when processing seeds and powdered foods is difficult due to their low water activity, irregular surfaces, and opaqueness. Moreover, existing thermal processing can readily cause various undesirable changes in sensory properties. Intense pulsed light (IPL) can be effective in nonthermal processing, and so two xenon lamps were attached to the sides of a self-designed cyclone type of pilot-scale IPL device. Each lamp was connected to its own power supply, and the following treatment conditions were applied to four sample types: lamp DC voltage of 1800–4200 V, pulse width of 0.5–1.0 ms, frequency of 2 Hz, and treatment time of 1–5 min. This device achieved reductions of 0.45, 0.66, and 0.88 log CFU/mL for ground black pepper, red pepper, and embryo buds of rice, respectively, under a total energy fluence of 12.31 J/cm2. Meanwhile, >3-log reductions were achieved for sesame seed samples under a total energy fluence of 11.26 J/cm2. In addition, analyses of color changes, water activity, and moisture content revealed no significant differences between the control and IPL-treated samples. These findings indicate that IPL treatment may be considered a feasible sterilization method for seeds and powdered foods.

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