Results 51 to 60 of about 30,389 (284)

Mirror-Stamping: A new TLC-SERS method for color authentication

open access: yesTalanta Open, 2023
Adulteration of natural colorants with artificial ones compromises the authenticity, quality, and safety of food products. It is significant for food companies to check the raw colorant ingredients to avoid potential adulteration.
Haochen Dai, Lili He
doaj   +1 more source

FORMULASI BEDAK (Face Powder) EKSTRAK ETANOL KULIT BUAH MANGGIS (Garcinia mangostana L.) SEBAGAI PEWARNA KOSMETIK ALAMI KAJIAN UJI STABILITAS DAN UJI IRITASINYA [PDF]

open access: yes, 2013
Mangosteen (Garcinia mangostana) is a tropical fruit. One of the mangosteen fruit parts that can be used is its pericarp. Pericarp of mangosteen (Garcinia mangostana L.) produces red to purple due to the presence of anthocyanin pigment.
HARDHI, SYLVIA PURBANARY
core  

Color realism and color science [PDF]

open access: yesBehavioral and Brain Sciences, 2003
AbstractThe target article is an attempt to make some progress on the problem of color realism. Are objects colored? And what is the nature of the color properties? We defend the view that physical objects (for instance, tomatoes, radishes, and rubies) are colored, and that colors are physical properties, specifically, types of reflectance.
Byrne, Alex, Hilbert, David R.
openaire   +3 more sources

Better Material Properties and Faster Catalyzed Chemical Recycling for Poly(L‐Lactide) Using a Simple Commercial Glycerol Ethoxylate Additive

open access: yesChemistry – A European Journal, EarlyView.
Glycerol ethoxylate (GEO), a branched ethylene glycol derivative, both toughens commercial PLLA and accelerates its chemical recycling to L‐lactide. The lead sample, containing 10 wt.% GEO, shows 9x higher elongation at break and 6x higher tensile toughness than pure PLLA. The GEO–PLLA samples are efficiently chemically recycled to L‐lactide, even when
Madeleine L. Smith   +4 more
wiley   +1 more source

Preservation of Natural Colorant Extract of Jalawe Fruit Peel (Terminalia bellirica) in Water-Based Solution

open access: yesIndonesian Journal of Chemistry, 2016
The general objective of this study is to preserve natural colorant extract of jalawe fruit peel in water-based solution during storing. The specific objectives in this research are finding suitable type and amount of antimicrobial compound to prevent ...
Edia Rahayuningsih   +2 more
doaj   +1 more source

Analysis of biomolecules in cochineal dyed archaeological textiles by surface-enhanced Raman spectroscopy

open access: yesScientific Reports, 2021
SERS spectroscopy is successfully employed in this work to reveal different components integrating the cochineal colorant employed for dying archaeological textile samples from the Arica Region in North Chile.
F. Celis   +4 more
doaj   +1 more source

Colour, health and wellbeing: the hidden qualities and properties of natural dyes [PDF]

open access: yes, 2013
This paper addresses the questions: Is it feasible that the chemicals present in the natural dyes of both plants and insects which in the past, man has exploited for their colour, could exhibit other properties?
Wells, Kate
core   +1 more source

Chemical engineering as an essential element of industrial biotechnology in Mexico: New aims in research and university education

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract On the centennial of higher education in Chemical Engineering in Mexico, it is pertinent to revisit the key stages that have contributed to its consolidation as a vital discipline for the nation's scientific and technological advancement. Although the initial mission of chemical engineering education was primarily oriented toward the training ...
Agustín López Munguía   +3 more
wiley   +1 more source

Klorofil Daun Suji: Potensi dan Tantangan Pengembangan Pewarna Hijau Alami

open access: yesJurnal Ilmu Pertanian Indonesia, 2019
Chlorophyll has long been used as a green colorant for food and non-food applications. One source of chlorophyll is suji (Dracaena angustifolia (Medik.) Roxb.) leaf.
Dias Indrasti   +3 more
doaj   +1 more source

Extraction of metabolites from Calendula officinalis and evaluation of their colorant and antibacterial capacity

open access: yesRevista Colombiana de Biotecnología, 2020
In this work, different bioactive compounds were obtained from Calendula officinalis by using conventional soxhlet extraction, shaker-assisted extraction and ultrasound-assisted extraction.
Laura Cristina Rojas Bedoya   +2 more
doaj   +1 more source

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