Isomerization of feruloylputrescine in orange juice by light exposure.

Exposure to light may adversely affect the quality of foods. This investigation of how light exposure affects citrus (orange and mandarin blend) juice in polyethylene terephthalate (PET) bottles demonstrated that the isomeric form of a compound in the juice changed during storage. This compound was identified as feruloylputrescine (FP; CAS: 501-13-3; CHNO) using LC/MS (Q-TOF).

Phenylpropanoid composition in fig (Ficus carica L.) leaves.

The leaves of fig (Ficus carica L.) have been used for traditional and Chinese medicine. We determined the composition of phenylpropanoids (polyphenols and furanocoumarins) as a functional agent in the leaves of 37 cultivars of fig.

Development of a Quantitative PCR Assay for Thermophilic Spore-Forming Geobacillus stearothermophilus in Canned Food.

The thermophilic spore forming bacteria Geobacillus stearothermophilus is recognized as a major cause of spoilage in canned food. A quantitative real-time PCR assay was developed to specifically detect and quantify the species G. stearothermophilus in samples from canned food.

Detection and Quantification of Thermophilic Spore-Forming Moorella thermoacetica in Canned Beverages Using Real-Time PCR.

A quantitative real-time PCR assay was developed to specifically detect and quantify Moorella thermoacetica and/or Moorella thermoautotrophica from canned coffee beverages. Six different combinations of newly designed primers were examined, and primer pair v1-1F/v4R was found to specifically amplify M. thermoacetica and M.

Identification of phenylpropanoids in fig (Ficus carica L.) leaves.

In this study, the phenylpropanoid composition and antioxidant activity of identified components in fig (Ficus carica L.) leaves were examined. Known polyphenols rutin, isoschaftoside, isoquercetin, and chlorogenic acid were identified.

Hepatic gene expression of the insulin signaling pathway is altered by administration of persimmon peel extract: a DNA microarray study using type 2 diabetic Goto-Kakizaki rats.

Persimmon (Diospyros kaki) is a very popular fruit in East Asian countries, but its peels are not consumed despite the fact that they contain many antioxidants such as carotenoids and polyphenols. We prepared a fat-soluble extract from persimmon peel (PP) and fed type 2 diabetic Goto-Kakizaki (GK) rats an AIN-93G rodent diet supplemented with persimmon peel extract (PP diet) for 12 weeks. Compared with the control AIN-93G diet, the PP diet significantly reduced plasma glutamic-pyruvate transaminase activity, with accumulation of β-cryptoxanthin in the liver.

Preparing a carotenoid polyphenol-enriched extract from the peel of persimmon, Diospyros kaki L.f.

The use of persimmon (Diospyros kaki L.f.) as a possible functional food material has not garnered widespread popularity.

Inductively coupled plasma atomic emission spectrometric determination of tin in canned food.

Various canned foods were digested sequentially with HNO3 and HCl, diluted to 100 mL, and filtered, and then tin was determined by inductively coupled plasma atomic emission spectrometry (ICP/AES). Samples of canned Satsuma mandarin, peach, apricot, pineapple, apple juice, mushroom, asparagus, evaporated milk, short-necked clam, spinach, whole tomato, meat, and salmon were evaluated. Sample preparations did not require time-consuming dilutions, because ICP/AES has wide dynamic range.