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The purpose of this paper is to evaluate the antioxidant and type II diabetes related enzyme inhibition properties of phenolic extract from raw and traditionally processed Indian under‐utilized food legume grains, Bauhinia purpurea L. (purple camel's foot seeds).

The methanolic extract was prepared from the raw and traditionally processed seed samples and analyzed for total phenolic content. The antioxidant activity and type II diabetes related enzyme inhibition properties of methanolic extract and their relationship with phenolic content was demonstrated.

The methanolic extract of raw seed materials contained total free phenolic content of 14.45±1.62 g catechin equivalent/100 g extract DM. Encouraging levels of ferric reducing/antioxidant power (FRAP, 1203 mmol Fe[II]/mg extract), inhibition of ß‐carotene degradation (45.37 percent) and scavenging activity against DPPH (63.60 percent) and superoxide (42.14 percent) radicals were exhibited by the raw samples. Further, it also recorded 80.69 percent of α‐amylase and 63.74 percent of α‐glucosidase enzyme inhibition characteristics under in vitro starch digestion bioassay. Sprouting+oil‐frying caused an apparent increase on the total free phenolic content, antioxidant and free radical scavenging capacity, while soaking+cooking as well as open‐pan roasting treatments show diminishing effects.

Identification of suitable processing technique offered a good strategy to improve the phenolic content and health relevant functionality of B. purpurea seeds, which could be envisaged as a dietary ingredient in the formulation of supplementary foods with therapeutic value to manage type II diabetic patients.

The purpose of this paper is to investigate the contribution of each food group from the typical Indonesian diet to the daily intake of micronutrients and to the micronutrient deficiency status of different age groups of the Indonesian population, and also to formulate a healthier diet using linear programming.

Data on typical Indonesian diet, food items and serving sizes were obtained from the Indonesian Socio Economic Survey. Each food item of the diet and its serving size were noted and their iron (mg.day⁻¹), zinc (mg.day⁻¹) and vitamin A (Retinol Equivalent, RE.day⁻¹) contribution were calculated. Adequacy of typical diet was determined in comparison to RDA. Linear programming calculations were performed using POM‐QM for windows version 3.

The highest iron and zinc contributor in each age group was white rice and for vitamin A was the chicken and meat group. Iron deficiency in young adults was 38 per cent, children (26 per cent) and adult group (11 per cent). Zinc deficiency in young adult was 64 per cent children (60 per cent) and adult groups (45 per cent). Vitamin A deficiency in children was 57 per cent, adult (29 per cent) and young adult group (16 per cent). Linear programming can be used to formulate balanced diet.

Varieties of foods used to formulate the balanced diet in this paper were limited. For future research, more detailed formulation can be proposed.

The paper shows that Indonesians needs to consume more vegetables to achieve the micronutrient requirement.

The recommended dietary formulation can improve the micronutrient deficiency status among different age groups in Indonesia and the approach of the research can be implemented in other countries.

In recent years, one of the most important and active research areas has been local food. This study aims to examine the evolution and trends of local food research in several disciplines or fields in the 50 years, highlighting emerging research themes, collaborations such as authors, institutions, journals and co-citations such as documents, authors and journals.

A total of 869 local food-related articles from the Web of Science (WoS) database from 1970 to 2020 were analyzed by several bibliometric analyses using CiteSpace II software.

The findings indicate that the number of studies in the local food field has increased rapidly and it is an interdisciplinary subject. Moreover, the results indicate that there is partly collaboration among authors, institutions or countries that conduct research on local food. For example, the most productive authors in this field are in USA, India, Brazil and European countries. Another remarkable result of this study is that tourism and hospitality discipline has focused on local food subject, especially in the last five years.

This is one of the first attempts by using network analysis to directly understand and visualize the interrelated structures of the local food research. Furthermore, the results of this study may provide researchers a reference guide to better evaluate and monitor local food research.