Results 1 to 10 of about 13,793 (186)

Zn protoporphyrin IX is formed not from heme but from protoporphyrin IX [PDF]

Meat Science, 2007
We examined the effects of exogenous myoglobin, a bivalent chelator, and nitrite on Zn protoporphyrin IX (ZPP) formation by using model systems. ZPP was formed in a model solution without addition of exogenous myoglobin. After incubation, the amount of ZPP in a model solution was increased but that of heme was not decreased compared with the amounts ...
Takanori Nsihimura, Jun-Ichi Wakamatsu
exaly   +5 more sources

Effects of Mono- and Dicapsaicinoid Functionalization on the Physicochemical Properties and Antimicrobial Photodynamic Activity of Protoporphyrin IX. [PDF]

ChemMedChem
Capsaicin functionalization of Protoporphyrin IX influences aggregation behavior, lipophilicity, and photodynamic activity. A monosubstituted derivative exhibits enhanced antimicrobial photoinactivation of Staphylococcus aureus, whereas increased functionalization does not improve efficacy.
Cunha IVD, Calefi GG, Silva NBS, Teixeira JG, Carmo MEGD, Macruz PD, Pilau EJ, Patrocínio AOT, Martins CHG, Júnior COR, Tsubone TM.   +10 more
europepmc   +2 more sources

Piperazine and Morpholine Protoporphyrin IX Derivatives Intensify Biomolecules Oxidation and Phototoxicity in Triple-Negative Breast Cancer. [PDF]

ChemMedChem
Protoporphyrin IX derivatives bearing piperazine or morpholine substituents exhibit enhanced cellular retention and photodynamic activity in triple‐negative breast cancer cells. Structural modification promotes oxidative stress, alters mitochondrial membrane potential, and increases caspase‐3 activity, providing new structure–activity relationship ...
Franco MDS, Lapierre TJWJD, Mendonça TP, Peixoto LFF, Teixeira RR, Guerra JFDC, Tudini KAGY, Ribeiro DL, Espindola FS, Justino AB, Rezende Júnior CO, Tsubone TM.   +11 more
europepmc   +2 more sources

Simultaneous determination of protoporphyrin IX and magnesium protoporphyrin IX in Arabidopsis thaliana and Camellia sinensis using UPLC-MS/MS [PDF]

Plant Methods, 2023
Backgrounds Insertion of Mg2+ into protoporphyrin IX (PPIX) to produce magnesium-protoporphyrin IX (Mg-PPIX) was the first step toward chlorophyll biosynthesis, which not only imparts plants green pigmentation but underpins photosynthesis.
Chenyu Zhang, Chunlei Ma, Li Zhu, Mingzhe Yao   +3 more
doaj   +2 more sources

Reddish Colour in Cooked Ham Is Developed by a Mixture of Protoporphyrins Including Zn-Protoporphyrin and Protoporphyrin IX

Foods, 2022
The nitrosyl–heme complex is considered the pigment responsible for the development of reddish colour in cooked hams. However, the same reddish colour was observed in a nitrite-free product elaborated with polyphenols, suggesting the presence of other ...
Claudia Giménez-Campillo, Juan de Dios Hernández, Isidro Guillén, Natalia Campillo, Natalia Arroyo-Manzanares, Carlos de Torre-Minguela, Pilar Viñas   +6 more
doaj   +3 more sources

Synthetic biology-instructed transdermal microneedle patch for traceable photodynamic therapy

Nature Communications, 2022
5-Aminolevulinic acid-based photodynamic therapy heavily depends on the biological transformation efficiency of 5-aminolevulinic acid to protoporphyrin IX, while the lack of an effective delivery system and imaging navigation are major hurdles in ...
Gang He, Yashi Li, Muhammad Rizwan Younis, Lian-Hua Fu, Ting He, Shan Lei, Jing Lin, Peng Huang   +7 more
doaj   +1 more source

Gold Nanoparticles/Nanographene-Based 3D Sensors Integrated in Mini-Platforms for Thiamine Detection

Sensors, 2022
Vitamins are essential for sustaining daily activities and perform crucial roles in metabolism, such as preventing vascular events and delaying the development of diabetic nephropathy.
Damaris-Cristina Gheorghe, Jacobus (Koos) Frederick van Staden, Raluca-Ioana Stefan-van Staden, Paula Sfirloaga   +3 more
doaj   +1 more source

The pigments in eggshell with different colour and the pigment regulatory gene expression in corresponding chicken’s shell gland

Animal, 2023
Eggshell colour is the unique appearance and economically valuable trait of eggs, whereas the colour is often short of uniformity, especially in the blue-shelled breeds, hence, their pigment differences and molecular mechanism need clarity.
Huanhuan Wang, Ying Ge, Lei Zhang, Yinghui Wei, Qinghai Li, Xuedong Zhang, Yuchun Pan   +6 more
doaj   +1 more source

A photosensitizing fusion protein with targeting capabilities

Biomolecular Concepts, 2022
The photodynamic treatment for antimicrobial applications or anticancer therapy relies on reactive oxygen species generated by photosensitizing molecules after absorption of visible or near-infrared light.
Bruno Stefano, Margiotta Marilena, Cozzolino Marco, Bianchini Paolo, Diaspro Alberto, Cavanna Luigi, Tognolini Massimiliano, Abbruzzetti Stefania, Viappiani Cristiano   +8 more
doaj   +1 more source

Mechanisms associated with the depigmentation of brown eggshells: a review

Poultry Science, 2021
: Eggshell color is an important shell quality trait that influences consumer preference. It is also of particular importance with respect to sexual signaling and the physiological and mechanical properties of shell pigment.
Ming-Yuan Lu, Li Xu, Guang-Hai Qi, Hai-Jun Zhang, Kai Qiu, Jing Wang, Shu-Geng Wu   +6 more
doaj   +1 more source