Search PubMed⌕ Search
Home/Archive/PubMed

PubMed · 11853514

Pungency in paprika (Capsicum annuum). 1. Decrease of capsaicinoid content following cellular disruption.

Petra Kirschbaum-Titze·Constanze Hiepler·Erika Mueller-Seitz·Michael Petz
View original source ↗Export metadata ↓

Abstract

The capsaicinoid content in fruits of Capsicum annuum decreased within several days to a level of only 10% of the starting value when cells were disrupted by homogenization. This decrease was not observed in fruits that were carefully cut into halves. The analysis of one half made it possible to determine the reference content at time zero for the second half. A much lower decrease was observed when minced fruits were stored under nitrogen, whereas storage under oxygen resulted in considerable losses of capsaicinoids, indicating oxidative processes as a cause for the decrease of capsaicinoid content.

Explore related subjects

CapsaicinCapsicumFood HandlingHumansSpecies SpecificityTasteTime FactorsComparative StudyJournal ArticleResearch Support, Non-U.S. Gov't

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

Petra Kirschbaum-Titze, Constanze Hiepler, Erika Mueller-Seitz, Michael Petz. 2002-02-27. Pungency in paprika (Capsicum annuum). 1. Decrease of capsaicinoid content following cellular disruption.. https://doi.org/10.1021/jf010527a

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2003

Sera from cancer patients contain two oscillating ECTO-NOX activities with different period lengths.

ECTO-NOX protein's are cell surface-associated and growth-related hydroquinone oxidases with both protein disulfide-thiol interchange activity and the capacity to oxidize NAD(P)H. The activities of these ECTO-NOX proteins are not steady state but fluctuate to create a repeating pattern of oscillations. Two forms of ECTO-NOX activities have been distinguished. The constitutive ECTO-NOX (CNOX), is hormone responsive and refractory to quinone-site inhibitors. A tumor-associated NOX (tNOX) is unregulated, refractory to hormones and growth factors and responds to quinone-site inhibitors. CNOX proteins are widely distributed and exhibit oscillations in enzymatic activity with a period length of 24 min. tNOX proteins are cancer specific and exhibit oscillations with a period length of about 22 min. Our findings now demonstrate the presence of the novel oscillating tNOX activity in sera of patients with cancer whereas the constitutive NOX of non-cancer cells is present in sera of both cancer patients and healthy volunteers. We conclude that ECTO-NOX proteins in sera exhibit oscillatory characteristics similar to those of ECTO-NOX forms of the cell surface.

Capsaicin↗
PubMed2003

Putrescine facilitated enhancement of capsaicin production in cell suspension cultures of Capsicum frutescens.

Putrescine treatment (0.1 mmol/L) influenced enhancement of growth and capsaicin production in the cell suspension cultures of C. frutescens. The administration of polyamine inhibitor DFMA (alpha-DL-difluoromethylarginine) resulted in a reduction of the growth, capsaicin content and the endogenous titres of polyamines (PAs). The capsaicin synthase activity was also higher in the putrescine (Put) treated cultures. Ethylene levels were lower in the cultures treated with putrescine. This study suggested that Put facilitates growth and capsaicin production.

Capsaicin↗